HOMEVULNERABILITIESCVE-2026-57456
HIGH

CVE-2026-57456

CWE-94Published: June 25, 2026· Updated: Jun 26, 2026

7.8
CVSS v3.1
EPSS:0.14%probability of exploitation in 30 daysPercentile:4.0th

Official Description

Vim is an open source, command line text editor. Prior to 9.2.0699, Vim's Python omni-completion (runtime/autoload/python3complete.vim and the legacy pythoncomplete.vim) executes reconstructed function and class definitions from the current buffer with exec() as part of populating the completion dictionary. When reconstructing that source, each scope's docstring is inserted verbatim between triple quotes with no escaping, so a hostile buffer can break out of the triple-quoted literal and execute attacker-controlled Python during omni-completion. This vulnerability is fixed in 9.2.0699.

NVD Source

Technical Analysis

CVE-2026-57456 requires local access, meaning attackers must already have a foothold on the target system.

Exploitation does not require any privileges, though user interaction (Required) is needed, which slightly reduces the risk of mass automated attacks.

A successful exploit results in complete confidentiality breach (data exposure), full integrity compromise (data manipulation), availability disruption (denial of service), with a CVSS base score of 7.8.

CVSS v3.1 Vector Breakdown

Exploitability
Attack VectorLocal
Attack ComplexityLow
Privileges Req.None
User InteractionRequired
ScopeUnchanged
Impact
ConfidentialityHigh
IntegrityHigh
AvailabilityHigh
CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H

Affected Vendors & Products

vim1 product
vim
Source: NVD CPE · 1 total CPE entries

Exploit & PoC Resources

NO KNOWN EXPLOITNo public exploit confirmed at this time
Exploit-DB
Offensive Security exploit database
GitHub PoC Search
Community PoC repositories
Rapid7 / Metasploit
Metasploit module search
PacketStorm
Security advisories & exploits
NVD Detail
Official NIST entry
MITRE CVE
CVE Program entry
External links open in a new tab. Always verify in a controlled environment before use.

Official Patches & Advisories

PATCHhttps://github.com/vim/vim/commit/cce141c42740f122dd8486ae04e21c2a81016ba8
ADVISORYhttps://github.com/vim/vim/security/advisories/GHSA-ppj8-wqjf-6fp3

All References (3)

→
https://github.com/vim/vim/commit/cce141c42740f122dd8486ae04e21c2a81016ba8Patch
→
https://github.com/vim/vim/releases/tag/v9.2.0699Product
→
https://github.com/vim/vim/security/advisories/GHSA-ppj8-wqjf-6fp3Vendor Advisory

Quick Facts

CVE IDCVE-2026-57456
CVSS Score7.8 / 10
SeverityHIGH
WeaknessCWE-94
CISA KEVNo
EPSS (30d)0.14%
Affected1 vendor
PublishedJun 25, 2026

Related CVEs (CWE-94)

CVE-2026-45131
10.0
CVE-2026-45132
10.0
CVE-2025-14009
10.0
CVE-2026-26332
10.0
CVE-2026-42288
10.0
CVE-2026-42298
10.0

Recommended Actions

  • →Apply vendor patches immediately
  • →Monitor CVE-2026-57456 in threat intel feeds
  • →Review IDS/IPS signatures for exploitation attempts
Data sourced from NVD (NIST), CISA KEV, and EPSS (FIRST). Analysis generated by CTIWATCH.COM. CVE data is provided under the NVD usage policy.
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