CVE-2026-57452

Vim: Out-of-bounds Read with libsodium-encrypted Files

MEDIUM
5.5
CVSS Score
Published: June 25, 2026 at 03:27 PM UTC
Updated: June 27, 2026 at 11:42 AM UTC
1 product affected across 1 vendorVim

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Severity
MEDIUM5.5
Exploit prediction
EPSS 0.2%
SSVC
No known exploit

Description

Vim is an open source, command line text editor. Prior to 9.2.0671, when Vim opens a file encrypted with the VimCrypt~04! or VimCrypt~05! method (xchacha20poly1305, requires the +sodium feature) whose body is shorter than a single libsodium secretstream header, an unsigned length calculation underflows and a subsequent decryption call reads far past the end of the input buffer, crashing Vim. This vulnerability is fixed in 9.2.0671.

Affected

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

v < 9.2.0671
Affected range stops below 9.2.0671, 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_CONFIRMVendor Advisory
Source: cverecord
https://github.com/vim/vim/security/advisories/GHSA-c4j9-wr9j-4486
x_refsource_MISCProduct
Source: cverecord
https://github.com/vim/vim/releases/tag/v9.2.0671

SSVC — Action Prioritization

SSVCNo known exploitNot automatablePartial impact

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

CVSS

5.5MEDIUMGitHub_M
Attack Vector
LOCAL
Complexity
LOW
Privileges
NONE
User Interaction
REQUIRED
Scope
UNCHANGED
Confidentiality
NONE
Integrity
NONE
Availability
HIGH
Vector?

Quick Info

StatusANALYZED
CWE
CWE-125CWE-191

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