CVE-2026-73074

Vim: Heap Buffer Overflow in Text Property Handling

MEDIUM
6.7
CVSS Score
Published: August 11, 2026 at 03:35 PM UTC
Updated: October 6, 2026 at 08:07 PM UTC
1 product affected across 1 vendorVim

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Severity
MEDIUM6.7
Exploit prediction
EPSS 0.1%
SSVC
No known exploit

Description

Vim is an open source, command line text editor. Prior to 9.2.0841, prop_add_one() in src/textprop.c uses the proplen value from get_text_props() to increment a uint16_t property count beyond 0xffff, wrapping the count to zero and copying existing text-property records into a heap allocation sized for none of them. This issue is fixed in version 9.2.0841.

Affected

Our own answer: ranges merged, affected separated from platform-only, with confidence and review flags.

v < 9.2.0841
Affected range stops below 9.2.0841, so it looks safe — our inference, not a vendor statement

Remediation

No guide yet

No remediation guidance has been written for this CVE yet. What the record does show:

References (2)

x_refsource_CONFIRMPatchVendor Advisory
Source: cverecord
https://github.com/vim/vim/security/advisories/GHSA-hm4g-pjfx-m27j

SSVC — Action Prioritization

SSVCNo known exploitNot automatableTotal impact

SSVC signals action urgency (what to patch first), separate from CVSS which measures severity.

CVSS

Attack Vector
LOCAL
Complexity
HIGH
Privileges
LOW
User Interaction
REQUIRED
Scope
UNCHANGED
Confidentiality
HIGH
Integrity
HIGH
Availability
HIGH
Vector?

Quick Info

StatusANALYZED
CWE
CWE-190

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