Read the docs
TI-2026-20817 Aliases CVE-2026-25749

Heap Overflow in Vim

Priority LOW 29CWE-122Published · Updated

Key facts

Attack vector
Local
Privileges required
Low
User interaction
Required
Attack complexity
Low
Impact type
—
Confidentiality · integrity · availability
None · High · High
Fix status
Partial Red Hat: 45 fixed, 1 without a fix

Attack profile from CVSS 3.1 · CNA. Fix status from CNA and Red Hat.

Summary

Vim is an open source, command line text editor. Prior to version 9.1.2132, a heap buffer overflow vulnerability exists in Vim's tag file resolution logic when processing the 'helpfile' option. The vulnerability is located in the get_tagfname() function in src/tag.c. When processing help file tags, Vim copies the user-controlled 'helpfile' option value into a fixed-size heap buffer of MAXPATHL + 1 bytes (typically 4097 bytes) using an unsafe STRCPY() operation without any bounds checking. This issue has been patched in version 9.1.2132.

Why it matters now

Exploitation None reported CISA SSVC · not in CISA KEV
EPSS 0.00262 18th percentileScored 2026-11-07
Public exploit Yes 1 exploit referenceTagged by NVD
Fix Partial vim (vim): 9.1.2132Red Hat: 28 advisoriesRed Hat: 45 fixed, 1 without a fix

SSVC decision points

CISA ADP · SSVC 2.0.3

Exploitation
None
Automatable
No
Technical impact
Partial

The decision (Track, Attend, Act) also depends on your mission and well-being impact; see CISA's SSVC guide.

Affected products

VendorProductAffected versionsFixed inStatusSource
vimvimbefore 9.1.21329.1.2132Patch availableCNA
  • vim Vendorvim Affected before 9.1.2132 Fixed in 9.1.2132 Patch available CNA

CPE configurations NVD · 2

CPEVersionsRoleVendor
cpe:2.3:a:neovim:neovim:*:*:*:*:*:*:*:*up to 0.11.6VulnerableNeovim
cpe:2.3:a:vim:vim:*:*:*:*:*:*:*:*before 9.1.2132Vulnerablevim
  • cpe:2.3:a:neovim:neovim:*:*:*:*:*:*:*:* Versions up to 0.11.6 Vulnerable ·Neovim
  • cpe:2.3:a:vim:vim:*:*:*:*:*:*:*:* Versions before 9.1.2132 Vulnerable ·vim

Remediation

  • Fix · CNA vim (vim) Fixed in 9.1.2132

Red Hat 28 advisories

  • RHSA-2026:25096 Released 2026-06-10 · Red Hat rating Important
    Red Hat AI Inference Server Model Optimization Tools 3.2.2 (cuda)
    • Red Hat AI Inference Server 3.2 registry.redhat.io/rhaiis/model-opt-cuda-rhel9
  • RHSA-2026:17596 Released 2026-05-20 · Red Hat rating Important
    OpenShift Container Platform 4.17.54 bug fix and security update
    • Red Hat OpenShift Container Platform 4.17 rhcos-aarch64-417.94.202605112123-0, rhcos-ppc64le-417.94.202605112123-0, rhcos-s390x-417.94.202605112123-0 +1
  • RHSA-2026:14773 Released 2026-05-13 · Red Hat rating Important
    OpenShift Container Platform 4.15.64 bug fix and security update
    • Red Hat OpenShift Container Platform 4.15 rhcos-aarch64-415.92.202605060220-0, rhcos-ppc64le-415.92.202605060220-0, rhcos-s390x-415.92.202605060220-0 +1
Show 25 more Red Hat advisories
  • RHSA-2026:15087 Released 2026-05-13 · Red Hat rating Important
    OpenShift Container Platform 4.14.65 bug fix and security update
    • Red Hat OpenShift Container Platform 4.14 rhcos-aarch64-414.92.202605060243-0, rhcos-ppc64le-414.92.202605060243-0, rhcos-s390x-414.92.202605060243-0 +1
  • RHSA-2026:16174 Released 2026-05-12 · Red Hat rating Important
    Red Hat AI Inference Server 3.3.3 (Spyre)
    • Red Hat AI Inference Server 3.3 registry.redhat.io/rhaiis/vllm-spyre-rhel9
  • RHSA-2026:16009 Released 2026-05-11 · Red Hat rating Important
    Red Hat AI Inference Server 3.3.3 (ROCm)
    • Red Hat AI Inference Server 3.3 registry.redhat.io/rhaiis/vllm-rocm-rhel9
  • RHSA-2026:16008 Released 2026-05-11 · Red Hat rating Important
    Red Hat AI Inference Server Model Optimization Tools 3.3.3 (CUDA)
    • Red Hat AI Inference Server 3.3 registry.redhat.io/rhaiis/model-opt-cuda-rhel9
  • RHSA-2026:12274 Released 2026-05-08 · Red Hat rating Important
    OpenShift Container Platform 4.12.88 bug fix and security update
    • Red Hat OpenShift Container Platform 4.12 rhcos-x86_64-412.86.202604281506-0
  • RHSA-2026:10097 Released 2026-04-30 · Red Hat rating Important
    OpenShift Container Platform 4.16.60 bug fix and security update
    • Red Hat OpenShift Container Platform 4.16 rhcos-aarch64-416.94.202604211449-0, rhcos-ppc64le-416.94.202604211449-0, rhcos-s390x-416.94.202604211449-0 +1
  • RHSA-2026:10065 Released 2026-04-23 · Red Hat rating Important
    Red Hat Update Infrastructure 5.1 security update
    • Red Hat Update Infrastructure 5 registry.redhat.io/rhui5/cds-rhel9, registry.redhat.io/rhui5/haproxy-rhel9, registry.redhat.io/rhui5/installer-rhel9 +1
  • RHSA-2026:9832 Released 2026-04-22 · Red Hat rating Important
    Insights proxy Container Image
    • Red Hat Insights proxy 1.5 registry.redhat.io/insights-proxy/insights-proxy-container-rhel9
  • RHSA-2026:8423 Released 2026-04-22 · Red Hat rating Important
    OpenShift Container Platform 4.18.38 bug fix and security update
    • Red Hat OpenShift Container Platform 4.18 rhcos-aarch64-418.94.202604140044-0, rhcos-ppc64le-418.94.202604140044-0, rhcos-s390x-418.94.202604140044-0 +1
  • RHSA-2026:7243 Released 2026-04-16 · Red Hat rating Important
    OpenShift Container Platform 4.19.28 bug fix and security update
    • Red Hat OpenShift Container Platform 4.19 rhcos-aarch64-4.19.9.6.202604080618-0, rhcos-ppc64le-4.19.9.6.202604080618-0, rhcos-s390x-4.19.9.6.202604080618-0 +1
  • RHSA-2026:7239 Released 2026-04-16 · Red Hat rating Important
    OpenShift Container Platform 4.13.65 bug fix and security update
    • Red Hat OpenShift Container Platform 4.13 rhcos-x86_64-413.92.202604080111-0
  • RHSA-2026:7335 Released 2026-04-09 · Red Hat rating Important
    Red Hat AI Inference Server 3.2.2 (CUDA)
    • Red Hat AI Inference Server 3.2 registry.redhat.io/rhaiis/vllm-cuda-rhel9
  • RHSA-2026:6736 Released 2026-04-07 · Red Hat rating Important
    vim security update
    • Red Hat Enterprise Linux AppStream E4S (v.8.8) vim-X11-2:8.0.1763-20.el8_8.1, vim-common-2:8.0.1763-20.el8_8.1, vim-enhanced-2:8.0.1763-20.el8_8.1 +1
    • Red Hat Enterprise Linux AppStream TUS (v.8.8) vim-X11-2:8.0.1763-20.el8_8.1, vim-common-2:8.0.1763-20.el8_8.1, vim-enhanced-2:8.0.1763-20.el8_8.1 +1
    • Red Hat Enterprise Linux BaseOS E4S (v.8.8) vim-2:8.0.1763-20.el8_8.1, vim-minimal-2:8.0.1763-20.el8_8.1
    • Red Hat Enterprise Linux BaseOS TUS (v.8.8) vim-2:8.0.1763-20.el8_8.1, vim-minimal-2:8.0.1763-20.el8_8.1
  • RHSA-2026:6731 Released 2026-04-07 · Red Hat rating Important
    vim security update
    • Red Hat Enterprise Linux AppStream AUS (v.8.6) vim-X11-2:8.0.1763-19.el8_6.5, vim-common-2:8.0.1763-19.el8_6.5, vim-enhanced-2:8.0.1763-19.el8_6.5 +1
    • Red Hat Enterprise Linux AppStream E4S (v.8.6) vim-X11-2:8.0.1763-19.el8_6.5, vim-common-2:8.0.1763-19.el8_6.5, vim-enhanced-2:8.0.1763-19.el8_6.5 +1
    • Red Hat Enterprise Linux AppStream TUS (v.8.6) vim-X11-2:8.0.1763-19.el8_6.5, vim-common-2:8.0.1763-19.el8_6.5, vim-enhanced-2:8.0.1763-19.el8_6.5 +1
    • Red Hat Enterprise Linux BaseOS AUS (v.8.6) vim-2:8.0.1763-19.el8_6.5, vim-minimal-2:8.0.1763-19.el8_6.5
    • Red Hat Enterprise Linux BaseOS E4S (v.8.6) vim-2:8.0.1763-19.el8_6.5, vim-minimal-2:8.0.1763-19.el8_6.5
    • Red Hat Enterprise Linux BaseOS TUS (v.8.6) vim-2:8.0.1763-19.el8_6.5, vim-minimal-2:8.0.1763-19.el8_6.5
  • RHSA-2026:6729 Released 2026-04-07 · Red Hat rating Important
    vim security update
    • Red Hat Enterprise Linux AppStream AUS (v.8.4) vim-X11-2:8.0.1763-15.el8_4.1, vim-common-2:8.0.1763-15.el8_4.1, vim-enhanced-2:8.0.1763-15.el8_4.1 +1
    • Red Hat Enterprise Linux AppStream EUS EXTENSION (v.8.4) vim-X11-2:8.0.1763-15.el8_4.1, vim-common-2:8.0.1763-15.el8_4.1, vim-enhanced-2:8.0.1763-15.el8_4.1 +1
    • Red Hat Enterprise Linux BaseOS AUS (v.8.4) vim-2:8.0.1763-15.el8_4.1, vim-minimal-2:8.0.1763-15.el8_4.1
    • Red Hat Enterprise Linux BaseOS EUS EXTENSION (v.8.4) vim-2:8.0.1763-15.el8_4.1, vim-minimal-2:8.0.1763-15.el8_4.1
  • RHSA-2026:6730 Released 2026-04-07 · Red Hat rating Important
    vim security update
    • Red Hat Enterprise Linux AppStream AUS (v. 8.2) vim-X11-2:8.0.1763-13.el8_2.1, vim-common-2:8.0.1763-13.el8_2.1, vim-enhanced-2:8.0.1763-13.el8_2.1 +1
    • Red Hat Enterprise Linux BaseOS AUS (v. 8.2) vim-2:8.0.1763-13.el8_2.1, vim-minimal-2:8.0.1763-13.el8_2.1
  • RHSA-2026:6620 Released 2026-04-06 · Red Hat rating Important
    vim security update
    • Red Hat Enterprise Linux AppStream E4S (v.9.2) vim-X11-2:8.2.2637-20.el9_2.1, vim-common-2:8.2.2637-20.el9_2.1, vim-enhanced-2:8.2.2637-20.el9_2.1
    • Red Hat Enterprise Linux BaseOS E4S (v.9.2) vim-2:8.2.2637-20.el9_2.1, vim-filesystem-2:8.2.2637-20.el9_2.1, vim-minimal-2:8.2.2637-20.el9_2.1
  • RHSA-2026:6617 Released 2026-04-06 · Red Hat rating Important
    vim security update
    • Red Hat Enterprise Linux Server (v. 7 ELS) vim-2:7.4.629-8.el7_9.1, vim-X11-2:7.4.629-8.el7_9.1, vim-common-2:7.4.629-8.el7_9.1 +3
  • RHSA-2026:6619 Released 2026-04-06 · Red Hat rating Important
    vim security update
    • Red Hat Enterprise Linux AppStream E4S (v.9.0) vim-X11-2:8.2.2637-16.el9_0.4, vim-common-2:8.2.2637-16.el9_0.4, vim-enhanced-2:8.2.2637-16.el9_0.4
    • Red Hat Enterprise Linux BaseOS E4S (v.9.0) vim-2:8.2.2637-16.el9_0.4, vim-filesystem-2:8.2.2637-16.el9_0.4, vim-minimal-2:8.2.2637-16.el9_0.4
  • RHSA-2026:6539 Released 2026-04-02 · Red Hat rating Important
    vim security update
    • Red Hat Enterprise Linux AppStream EUS (v.9.6) vim-X11-2:8.2.2637-22.el9_6.2, vim-common-2:8.2.2637-22.el9_6.2, vim-enhanced-2:8.2.2637-22.el9_6.2
    • Red Hat Enterprise Linux BaseOS EUS (v.9.6) vim-2:8.2.2637-22.el9_6.2, vim-filesystem-2:8.2.2637-22.el9_6.2, vim-minimal-2:8.2.2637-22.el9_6.2
  • RHSA-2026:6540 Released 2026-04-02 · Red Hat rating Important
    vim security update
    • Red Hat Enterprise Linux AppStream EUS (v.9.4) vim-X11-2:8.2.2637-20.el9_4.2, vim-common-2:8.2.2637-20.el9_4.2, vim-enhanced-2:8.2.2637-20.el9_4.2
    • Red Hat Enterprise Linux BaseOS EUS (v.9.4) vim-2:8.2.2637-20.el9_4.2, vim-filesystem-2:8.2.2637-20.el9_4.2, vim-minimal-2:8.2.2637-20.el9_4.2
  • RHSA-2026:6502 Released 2026-04-02 · Red Hat rating Important
    vim security update
    • Red Hat Enterprise Linux AppStream EUS (v. 10.0) vim-X11-2:9.1.083-5.el10_0.2, vim-common-2:9.1.083-5.el10_0.2, vim-enhanced-2:9.1.083-5.el10_0.2 +1
    • Red Hat Enterprise Linux BaseOS EUS (v. 10.0) vim-2:9.1.083-5.el10_0.2, vim-data-2:9.1.083-5.el10_0.2, vim-filesystem-2:9.1.083-5.el10_0.2 +1
  • RHSA-2026:5602 Released 2026-03-24 · Red Hat rating Moderate
    vim security update
    • Red Hat Enterprise Linux AppStream (v. 9) vim-X11-2:8.2.2637-23.el9_7.1, vim-enhanced-2:8.2.2637-23.el9_7.1
    • Red Hat Enterprise Linux BaseOS (v. 9) vim-2:8.2.2637-23.el9_7.1, vim-minimal-2:8.2.2637-23.el9_7.1
  • RHSA-2026:4715 Released 2026-03-17 · Red Hat rating Moderate
    vim security update
    • Red Hat Enterprise Linux AppStream (v. 10) vim-X11-2:9.1.083-6.el10_1.1, vim-enhanced-2:9.1.083-6.el10_1.1
    • Red Hat Enterprise Linux BaseOS (v. 10) vim-2:9.1.083-6.el10_1.1, vim-minimal-2:9.1.083-6.el10_1.1
  • RHSA-2026:4442 Released 2026-03-12 · Red Hat rating Moderate
    vim security update
    • Red Hat Enterprise Linux AppStream (v. 8) vim-X11-2:8.0.1763-22.el8_10, vim-enhanced-2:8.0.1763-22.el8_10
    • Red Hat Enterprise Linux BaseOS (v. 8) vim-2:8.0.1763-22.el8_10, vim-minimal-2:8.0.1763-22.el8_10

Vendor assessments

Red Hat

Red Hat rating: Moderate. Red Hat's page for this CVE →

ProductStatusPlan or fix
Red Hat Enterprise Linux 6AffectedNo fix planned: Out of support scope
Red Hat AI Inference Server 3.2Fixed RHSA-2026:25096, RHSA-2026:7335
Red Hat AI Inference Server 3.3Fixed RHSA-2026:16008, RHSA-2026:16009, RHSA-2026:16174
Red Hat Enterprise Linux AppStream (v. 10)Fixed RHSA-2026:4715
Red Hat Enterprise Linux AppStream (v. 8)Fixed RHSA-2026:4442
Red Hat Enterprise Linux AppStream (v. 9)Fixed RHSA-2026:5602
Red Hat Enterprise Linux AppStream AUS (v. 8.2)Fixed RHSA-2026:6730
Red Hat Enterprise Linux AppStream AUS (v.8.4)Fixed RHSA-2026:6729
Red Hat Enterprise Linux AppStream AUS (v.8.6)Fixed RHSA-2026:6731
Red Hat Enterprise Linux AppStream E4S (v.8.6)Fixed RHSA-2026:6731
Red Hat Enterprise Linux AppStream E4S (v.8.8)Fixed RHSA-2026:6736
Red Hat Enterprise Linux AppStream E4S (v.9.0)Fixed RHSA-2026:6619
Red Hat Enterprise Linux AppStream E4S (v.9.2)Fixed RHSA-2026:6620
Red Hat Enterprise Linux AppStream EUS (v. 10.0)Fixed RHSA-2026:6502
Red Hat Enterprise Linux AppStream EUS (v.9.4)Fixed RHSA-2026:6540
Red Hat Enterprise Linux AppStream EUS (v.9.6)Fixed RHSA-2026:6539
Red Hat Enterprise Linux AppStream EUS EXTENSION (v.8.4)Fixed RHSA-2026:6729
Red Hat Enterprise Linux AppStream TUS (v.8.6)Fixed RHSA-2026:6731
Red Hat Enterprise Linux AppStream TUS (v.8.8)Fixed RHSA-2026:6736
Red Hat Enterprise Linux BaseOS (v. 10)Fixed RHSA-2026:4715
Red Hat Enterprise Linux BaseOS (v. 8)Fixed RHSA-2026:4442
Red Hat Enterprise Linux BaseOS (v. 9)Fixed RHSA-2026:5602
Red Hat Enterprise Linux BaseOS AUS (v. 8.2)Fixed RHSA-2026:6730
Red Hat Enterprise Linux BaseOS AUS (v.8.4)Fixed RHSA-2026:6729
Red Hat Enterprise Linux BaseOS AUS (v.8.6)Fixed RHSA-2026:6731
Red Hat Enterprise Linux BaseOS E4S (v.8.6)Fixed RHSA-2026:6731
Red Hat Enterprise Linux BaseOS E4S (v.8.8)Fixed RHSA-2026:6736
Red Hat Enterprise Linux BaseOS E4S (v.9.0)Fixed RHSA-2026:6619
Red Hat Enterprise Linux BaseOS E4S (v.9.2)Fixed RHSA-2026:6620
Red Hat Enterprise Linux BaseOS EUS (v. 10.0)Fixed RHSA-2026:6502
Red Hat Enterprise Linux BaseOS EUS (v.9.4)Fixed RHSA-2026:6540
Red Hat Enterprise Linux BaseOS EUS (v.9.6)Fixed RHSA-2026:6539
Red Hat Enterprise Linux BaseOS EUS EXTENSION (v.8.4)Fixed RHSA-2026:6729
Red Hat Enterprise Linux BaseOS TUS (v.8.6)Fixed RHSA-2026:6731
Red Hat Enterprise Linux BaseOS TUS (v.8.8)Fixed RHSA-2026:6736
Red Hat Enterprise Linux Server (v. 7 ELS)Fixed RHSA-2026:6617
Red Hat Insights proxy 1.5Fixed RHSA-2026:9832
Red Hat OpenShift Container Platform 4.12Fixed RHSA-2026:12274
Red Hat OpenShift Container Platform 4.13Fixed RHSA-2026:7239
Red Hat OpenShift Container Platform 4.14Fixed RHSA-2026:15087
Red Hat OpenShift Container Platform 4.15Fixed RHSA-2026:14773
Red Hat OpenShift Container Platform 4.16Fixed RHSA-2026:10097
Red Hat OpenShift Container Platform 4.17Fixed RHSA-2026:17596
Red Hat OpenShift Container Platform 4.18Fixed RHSA-2026:8423
Red Hat OpenShift Container Platform 4.19Fixed RHSA-2026:7243
Red Hat Update Infrastructure 5Fixed RHSA-2026:10065
Not affected: 6 products
  • Red Hat Enterprise Linux AppStream (v. 10)
  • Red Hat Enterprise Linux AppStream (v. 8)
  • Red Hat Enterprise Linux AppStream (v. 9)
  • Red Hat Enterprise Linux BaseOS (v. 10)
  • Red Hat Enterprise Linux BaseOS (v. 8)
  • Red Hat Enterprise Linux BaseOS (v. 9)

Timeline

  1. 2026-10-02 Threatist record created from CVE-2026-25749
  2. 2026-10-16 Affected versions changed · Red Hat

References

Exploit 1

Patch 1

Other 1

  • TI-2022-03248 Heap-based Buffer Overflow in vim/vim CVSS 3.1CRITICAL 9.8
  • TI-2024-15103 Vim before 9.0.2142 has a stack-based buffer overflow because did_set_langmap in map.c… CVSS 3.1HIGH 7.8
  • TI-2023-05093 Use After Free in vim/vim CVSS 3.1HIGH 7.8
  • TI-2023-04407 Heap-based Buffer Overflow in vim/vim CVSS 3.1HIGH 7.8
  • TI-2023-04379 Heap-based Buffer Overflow in vim/vim CVSS 3.1HIGH 7.8
  • TI-2023-04378 Use After Free in vim/vim CVSS 3.1HIGH 7.8
See all 258 →

Sources

This product uses the NVD API but is not endorsed or certified by the NVD. Sources and licences