Vulnerability record · CVE-2025-9389 · published 24 August 2025

CVE-2025-9389: Vim memory buffer overflow vulnerability

Vim · Vim

A vulnerability was identified in vim 9.1.0000. Affected is the function __memmove_avx_unaligned_erms of the file memmove-vec-unaligned-erms.S. The manipulation leads to memory corruption. The attack needs to be performed locally. The exploit is publicly available and might be used. Some users are not able to reproduce this. One of the users mentions that this appears not to be working, "when coloring is turned on".

1.9 CVSS 4.0 Low EPSS 0.22% · top 89.3% CWE-119 · Memory buffer overflowCWE-787 · Out-of-bounds write

1.9CVSS 4.0 base score, v2 1.7

0.22%EPSS exploitation probability, 30 days

NoNot in CISA KEV

1Affected product versions listed by NVD

9References, 7 tagged exploit

17 Jun 2026Last modified by NVD

Description

CVSS:4.0/AV:L/AC:L/AT:N/PR:L/UI:N/VC:N/VI:N/VA:L/SC:N/SI:N/SA:N/E:P/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:

Affected products

1 vulnerable configurations from NVD's CPE data, grouped by vendor and product.

Vim Vim

References

Link	Tags
https://drive.google.com/file/d/1iFbTpW79vqBPkFjWYzGYIh_E6esPhYVY/view?usp=sharing	Exploit
https://github.com/vim/vim/issues/17940	ExploitIssue TrackingPatchVendor Advisory
https://github.com/vim/vim/issues/17940#issuecomment-3203415781	ExploitIssue TrackingPatch
https://vuldb.com/?ctiid.321222	Permissions RequiredVDB Entry
https://vuldb.com/?id.321222	Third Party AdvisoryVDB Entry
https://vuldb.com/?submit.630898	ExploitThird Party AdvisoryVDB Entry
https://github.com/vim/vim/issues/17940	ExploitIssue TrackingPatchVendor Advisory
https://github.com/vim/vim/issues/17940#issuecomment-3203415781	ExploitIssue TrackingPatch
https://vuldb.com/?submit.630898	ExploitThird Party AdvisoryVDB Entry

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Related vulnerabilities

Same products first, then exploited flaws of the same weakness class.

9.8CVE-2020-20703Vim classic buffer overflow vulnerabilityBuffer Overflow vulnerability in VIM v.8.1.2135 allows a remote attacker to execute arbitrary code via the operand parameter.EPSS 1.5%20 Jun 2023 9.8CVE-2022-3520Vim heap-based buffer overflow vulnerabilityHeap-based Buffer Overflow in GitHub repository vim/vim prior to 9.0.0765.EPSS 1.0%2 Dec 2022 9.8CVE-2022-0318Vim heap-based buffer overflow vulnerabilityHeap-based Buffer Overflow in vim/vim prior to 8.2.EPSS 2.0%21 Jan 2022 9.8CVE-2017-6349Vim integer overflow vulnerabilityAn 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 values for tr…EPSS 2.7%27 Feb 2017 9.8CVE-2017-6350Vim integer overflow vulnerabilityAn integer overflow at an unserialize_uep memory allocation site would occur for vim before patch 8.0.0378, if it does not properly validate values f…EPSS 3.2%27 Feb 2017 9.8CVE-2017-5953Vim integer overflow vulnerabilityvim before patch 8.0.0322 does not properly validate values for tree length when handling a spell file, which may result in an integer overflow at a …EPSS 2.8%10 Feb 2017 9.3CVE-2008-6235Vim os command injection vulnerabilityThe Netrw plugin (netrw.vim) in Vim 7.0 and 7.1 allows user-assisted attackers to execute arbitrary commands via shell metacharacters in a filename u…EPSS 3.0%21 Feb 2009 9.3CVE-2008-3074Tar.vim os command injection vulnerabilityThe shellescape function in Vim 7.0 through 7.2, including 7.2a.10, allows user-assisted attackers to execute arbitrary code via the "!" (exclamation…EPSS 3.8%21 Feb 2009

Source: NIST National Vulnerability Database (record CVE-2025-9389), CISA KEV, FIRST EPSS (scores of 2026-09-29). This page is refreshed as NVD updates the record.