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CVE-2026-51401· NVD / CVE Program· CNA mitre

An issue in Vim Project v9.2.0389 and earlier allows a local attacker to execute arbitrary code via the vms_fixfilename() function within fi

An issue in Vim Project v9.2.0389 and earlier allows a local attacker to execute arbitrary code via the vms_fixfilename() function within file vim/src/os_vms.c

HighCVSS 7.7 · v3.1—No exploit No fix recorded
Published
Aug 4, 2026
Updated
Sep 4, 2026
EPSS
0.2% · 9th percentile
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Report tools

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Action score

30

Monitor

Low priority for now.

CVSS
30 / 40 · 7.7 / 10
CISA KEV
0 / 30 · Not listed
EPSS
0 / 30 · 0.2%

CISA SSVC decision

Exploitation
none
Automatable
no
Technical impact
total

Vulnrichment: CISA's decision-tree inputs.

Noroxi analysis

No Noroxi analysis for this record yet

We don't hand-write analysis for the hundreds of thousands of vulnerabilities in the database; that wouldn't be honest. For notable, high-impact vulnerabilities our team writes the mechanism, detection and remediation steps.

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Affected systems

VendorProduct
vimvim

Affected versions

NVD version ranges (for catalog products). Add the product to your stack with a version and matching uses these.

  • vim vimup to 9.2.0389 inclusive

Same product

vim: all records

Other highest-scoring records for the same primary product.

  • CVE-2008-2712Vim 7.1.314, 6.4, and other versions allows user-assisted remote attackers to execute arbitrary commands via Vim scripts that do not properl
    42Plan
  • CVE-2022-0318Heap-based Buffer Overflow in vim/vim
    40Plan
  • CVE-2019-12735getchar.c in Vim before 8.1.1365 and Neovim before 0.3.6 allows remote attackers to execute arbitrary OS commands via the :source! command i
    40Plan
  • CVE-2017-6350An integer overflow at an unserialize_uep memory allocation site would occur for vim before patch 8.0.0378, if it does not properly validate
    40Plan
  • CVE-2017-6349An integer overflow at a u_read_undo memory allocation site would occur for vim before patch 8.0.0377, if it does not properly validate valu
    40Plan
  • CVE-2017-5953vim before patch 8.0.0322 does not properly validate values for tree length when handling a spell file, which may result in an integer overf
    40Plan

Remediation

Which version to upgrade to

Fix versions compiled from the vendor, package registries and Microsoft. Verify the vendor's note before upgrading.

No fix version is recorded for this entry. Check the references for vendor advisories.

Exploit status

No known public exploit

No public exploit has been observed yet. That doesn't mean you're safe, only that the bar is a little higher.

Research context

For pentesters and researchers: attack profile, score disagreement, timeline, patch commits, credits, variant and chain candidates, bug bounty scope. All derived from existing data; no exploit code.

Timeline

From publication to today: proof of concept, Metasploit module, CISA KEV and fix record. Dates are as reported by the sources.

No dated events beyond publication.

EPSS, last 120 days

FIRST EPSS daily score; only changes of 0.01 or more are recorded (step chart).

Patch and commit links

Commit, PR and diff links among the references. A starting point for patch-diffing and variant hunting; fixes, not exploits.

No commit or PR link among the references.

Credits

All researchers

Finders, reporters and analysts named in the CNA record. Click a name for that researcher’s other records.

No credits in the CNA record.

Variant candidates

Same product, same weakness class, within 18 months. If the patch missed the root cause, the sibling bug is here.

  • CVE-2026-730767 days apartVim: Arbitrary Command Execution via Malicious `.VimballRecord` Entry Replay in `vimball.vim`
    33Monitor
  • CVE-2026-5985626 days apartVim: Arbitrary Code Execution via PHP Omni-Completion
    33Monitor
  • CVE-2026-5985826 days apartVim: Arbitrary Code Execution via C Omni-Completion
    33Monitor
  • CVE-2026-5745640 days apartVim: Arbitrary Code Execution via Python Omni-Completion Docstrings
    33Monitor
  • CVE-2026-4396115 days apartVim: vimscript injection via unescaped filename in netrw s:netrwmarkfile() filter() expression allows arbitrary code execution
    31Monitor
  • CVE-2026-39881118 days apartVim Ex command injection in Vims NetBeans integration
    31Monitor

Chain candidates

An authentication bypass and a privilege-requiring bug in the same product, published close together: combined they may become an unauthenticated path.

—

Bug bounty scope

No known public program.

Source: bounty-targets-data (public HackerOne, Bugcrowd, Intigriti, YesWeHack listings).

Technical details

Attack conditions

  • Someone with local access to the system can trigger it.
  • No account or password is required.
  • No user action is required.
  • No special conditions are required; it is repeatable.

If successful

Confidentiality
high · data can be read
Integrity
high · data or configuration can be modified
Availability
none
Attack vector
Local
Attack complexity
Low
Privileges required
None
User interaction
None
Scope
Unchanged
Confidentiality impact
High
Integrity impact
High
Availability impact
None

Weakness class (CWE)

CWE-94 · Improper Control of Generation of Code ('Code Injection')

CVSS vector

CVSS:3.1/AV:L/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:N

nvd-secondary

Attack context

MITRE CAPEC attack patterns and ATT&CK techniques for this weakness class (CWE). A starting point for detection rules and threat hunting.

Change log

No changes recorded on tracked fields yet. Score, KEV, exploit maturity and fix status changes appear here.

References

Vendor advisories and official records. Exploit/PoC links are deliberately left out.

All records