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TI-2026-32963 Aliases CVE-2026-45130

Vim: Heap Buffer Overflow in spell file loading

Priority LOW 29CWE-122Published · Updated

Key facts

Attack vector
Local
Privileges required
None
User interaction
Required
Attack complexity
Low
Impact type
—
Confidentiality · integrity · availability
Low · Low · High
Fix status
Partial Red Hat: 1 fixed, 7 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 9.2.0450, a heap buffer overflow exists in read_compound() in src/spellfile.c when loading a crafted spell file (.spl) with UTF-8 encoding active. An attacker-controlled length field in the spell file's compound section overflows a 32-bit signed integer multiplication, causing a small buffer to be allocated for a write loop that runs many iterations, overflowing the heap. Because the 'spelllang' option can be set from a modeline, a text file modeline can trigger spell file loading if a malicious .spl file has been planted on the runtimepath. This issue has been patched in version 9.2.0450.

Why it matters now

Exploitation None reported CISA SSVC · not in CISA KEV
EPSS 0.00248 16th percentileScored 2026-11-07
Public exploit Yes 1 exploit referenceTagged by NVD
Fix Partial vim (vim): 9.2.0450Red Hat: 1 advisoryRed Hat: 1 fixed, 7 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 9.2.04509.2.0450Patch availableCNA
  • vim Vendorvim Affected before 9.2.0450 Fixed in 9.2.0450 Patch available CNA

CPE configurations NVD · 2

CPEVersionsRoleVendor
cpe:2.3:a:neovim:neovim:*:*:*:*:*:*:*:*up to 0.12.2VulnerableNeovim
cpe:2.3:a:vim:vim:*:*:*:*:*:*:*:*before 9.2.0450Vulnerablevim
  • cpe:2.3:a:neovim:neovim:*:*:*:*:*:*:*:* Versions up to 0.12.2 Vulnerable ·Neovim
  • cpe:2.3:a:vim:vim:*:*:*:*:*:*:*:* Versions before 9.2.0450 Vulnerable ·vim

Remediation

  • Fix · CNA vim (vim) Fixed in 9.2.0450

Red Hat 1 advisory

  • RHSA-2026:57614 Released 2026-08-20 · Red Hat rating Important
    Red Hat Hardened Images RPMs bug fix and enhancement update
    • Red Hat Hardened Images vim-2:9.2.967-1.1.hum1@src, vim-X11-2:9.2.967-1.1.hum1@aarch64, vim-X11-2:9.2.967-1.1.hum1@x86_64 +14

Vendor assessments

Red Hat

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

ProductStatusPlan or fix
Red Hat Enterprise Linux 10AffectedNo fix yet: Fix deferred
Red Hat Enterprise Linux 6AffectedNo fix planned: Out of support scope
Red Hat Enterprise Linux 7AffectedNo fix yet: Fix deferred
Red Hat Enterprise Linux 8AffectedNo fix yet: Fix deferred
Red Hat Enterprise Linux 9AffectedNo fix yet: Fix deferred
Red Hat OpenShift AI (RHOAI)Affected—
Red Hat OpenShift Container Platform 4AffectedNo fix yet: Fix deferred
Red Hat Hardened ImagesFixed RHSA-2026:57614

Timeline

  1. 2026-10-02 Threatist record created from CVE-2026-45130
  2. 2026-11-06 Affected versions changed · Red Hat

References

Exploit 1

Patch 1

Advisory 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