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TI-2026-02767 Aliases CVE-2026-3203GHSA-qrr9-2772-633f

Buffer Over-read in Wireshark

Priority LOW 32CWE-126Published · Updated

Key facts

Attack vector
Network
Privileges required
None
User interaction
None
Attack complexity
Low
Impact type
Denial of service
Confidentiality · integrity · availability
None · None · High
Fix status
Fixed

Attack profile from CVSS 3.1 · NVD. Fix status from CNA and Red Hat. Impact type from CWE-126 and the CVSS impact.

Summary

RF4CE Profile protocol dissector crash in Wireshark 4.6.0 to 4.6.3 and 4.4.0 to 4.4.13 allows denial of service

Why it matters now

Exploitation None reported CISA SSVC · not in CISA KEV
EPSS 0.00189 8th percentileScored 2026-11-07
Fix Fixed Wireshark (Wireshark Foundation): 4.6.4, 4.4.14Red Hat: 2 advisories

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
Wireshark FoundationWireshark4.6.0 to before 4.6.4; 4.4.0 to before 4.4.144.6.4, 4.4.14Patch availableCNA
  • Wireshark VendorWireshark Foundation Affected 4.6.0 to before 4.6.4; 4.4.0 to before 4.4.14 Fixed in 4.6.4, 4.4.14 Patch available CNA

CPE configurations NVD · 1

CPEVersionsRoleVendor
cpe:2.3:a:wireshark:wireshark:*:*:*:*:*:*:*:*4.4.0 to before 4.4.14; 4.6.0 to before 4.6.4VulnerableWireshark Foundation
  • cpe:2.3:a:wireshark:wireshark:*:*:*:*:*:*:*:* Versions 4.4.0 to before 4.4.14; 4.6.0 to before 4.6.4 Vulnerable ·Wireshark Foundation

Remediation

  • Fix · CNA Wireshark (Wireshark Foundation) Fixed in 4.6.4, 4.4.14

Red Hat 2 advisories

  • RHSA-2026:26182 Released 2026-06-16 · Red Hat rating Important
    wireshark security update
    • Red Hat Enterprise Linux AppStream EUS (v. 10.0) wireshark-1:4.4.2-3.el10_0.4, wireshark-cli-1:4.4.2-3.el10_0.4
    • Red Hat Enterprise Linux CodeReady Linux Builder EUS (v. 10.0) wireshark-devel-1:4.4.2-3.el10_0.4
  • RHSA-2026:9666 Released 2026-04-22 · Red Hat rating Moderate
    wireshark security update
    • Red Hat Enterprise Linux AppStream (v. 10) wireshark-1:4.4.2-4.el10_1.4, wireshark-cli-1:4.4.2-4.el10_1.4
    • Red Hat Enterprise Linux CodeReady Linux Builder (v. 10) wireshark-devel-1:4.4.2-4.el10_1.4

Fixed in the same release

Records fixed by the same vendor advisory or release, as the CNA lists them.

  • Release ·

    Wireshark 4.4.14, 4.6.4

    2 records Highest priority Priority LOW 2 LOW

    Other records, highest priority first

    • TI-2026-02765 Improperly Controlled Sequential Memory Allocation in WiresharkPriority LOW 32
    Show all 2 records →

Vendor assessments

Red Hat

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

ProductStatusPlan or fix
Red Hat Enterprise Linux AppStream (v. 10)Fixed RHSA-2026:9666
Red Hat Enterprise Linux AppStream EUS (v. 10.0)Fixed RHSA-2026:26182
Red Hat Enterprise Linux CodeReady Linux Builder (v. 10)Fixed RHSA-2026:9666
Red Hat Enterprise Linux CodeReady Linux Builder EUS (v. 10.0)Fixed RHSA-2026:26182
Not affected: 4 products
  • Red Hat Enterprise Linux 6
  • Red Hat Enterprise Linux 7
  • Red Hat Enterprise Linux 8
  • Red Hat Enterprise Linux 9

Timeline

  1. 2026-10-02 Threatist record created from CVE-2026-3203
  2. 2026-10-03 Alias added: GHSA-qrr9-2772-633f

References

Advisory 1

Other 1

  • TI-2026-53718 Heap-based Buffer Overflow in Wireshark CVSS 3.1CRITICAL 9.8
  • TI-2026-63612 Heap-based Buffer Overflow in Wireshark CVSS 3.1HIGH 8.8
  • TI-2024-16149 A buffer overflow in Wireshark before 4.2.0 allows a remote attacker to cause a denial of… CVSS 3.1HIGH 7.5
  • TI-2010-00291 Multiple buffer overflows in the LWRES dissector in Wireshark 0.9.15 through 1.0.10 and… CVSS 2.0HIGH 7.5
  • TI-2026-63614 Heap-based Buffer Overflow in Wireshark CVSS 3.1HIGH 8.1
  • TI-2014-01823 Buffer overflow in the mpeg_read function in wiretap/mpeg.c in the MPEG parser in… CVSS 2.0HIGH 9.3
See all 794 →

Sources

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