CVE-2026-73072

Vim: Heap Buffer Overflow when Loading a Spell File

HIGH
7.3
CVSS Score
Published: August 11, 2026 at 03:31 PM UTC
Updated: October 6, 2026 at 08:09 PM UTC
1 product affected across 1 vendorVim

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Severity
HIGH7.3
Exploit prediction
EPSS 0.1%
SSVC
No known exploit

Description

Vim is an open source, command line text editor. Prior to 9.2.0846, set_sofo() in src/spellfile.c reuses sl_sal_first[] without resetting values left by set_sal_first(), so a crafted spell file containing an SN_SAL section before an SN_SOFO section causes under-counted mapping lists and attacker-influenced writes beyond a heap allocation. This issue is fixed in version 9.2.0846.

Affected

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

v < 9.2.0846
Affected range stops below 9.2.0846, 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 (3)

x_refsource_CONFIRMPatchVendor Advisory
Source: cverecord
https://github.com/vim/vim/security/advisories/GHSA-9jqx-hgpr-6v64
x_refsource_MISCProduct
Source: cverecord
https://github.com/vim/vim/releases/tag/v9.2.0846

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

Quick Info

StatusANALYZED
CWE
CWE-122CWE-787

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