Vim is an open source, command line text editor. Prior to version 9.1.2132, a heap buffer overflow vulnerability exists in Vim's tag file resolution logic when processing the 'helpfile' option. The vulnerability is located in the get_tagfname() function in src/tag.c. When processing help file tags, Vim copies the user-controlled 'helpfile' option value into a fixed-size heap buffer of MAXPATHL + 1 bytes (typically 4097 bytes) using an unsafe STRCPY() operation without any bounds checking. This issue has been patched in version 9.1.2132.
Conclusion & alert: CVE-2026-25749 is rated Exploit Available (50/100): CVSS Medium severity, with low exploitation likelihood (EPSS 0.21%). Core evidence: 1 public exploit reference(s) are indexed (Exploit-DB). Mandatory action: Public exploits are available—assess exposure, apply mitigations, and prioritize patching.
Risk is dynamic; we continuously reassess and refresh what is shown on this page as upstream context changes.
| EDB-ID | Source | Kind | Published | Link |
|---|---|---|---|---|
| — | nvd_ref | exploit_tag | Exploit-DB ↗ |
EPSS lead: Daily EPSS estimates relative likelihood of exploitation; percentile ranks this CVE among scored vulnerabilities (higher = more severe relative rank).
| # | Date | Old EPSS score | New EPSS score | Delta (New - Old) |
|---|---|---|---|---|
| 1 | 2026-06-15 | 0.01% | 0.21% | +0.20% |
| 2 | 2026-02-07 | — | 0.01% | — |
Full EPSS history (2 records total)
CVSS metrics for this CVE.
| Base score | Version | Severity | Vector | Exploitability | Impact | Score source |
|---|---|---|---|---|---|---|
| 6.6 | 3.1 | MEDIUM |
|
1.3 | 5.2 | [email protected] |
| vendor | priority | summary | link |
|---|---|---|---|
alpine
|
— | CVE-2026-25749: 1 source package rows (vim); 311 state rows across 7 repos (3.19-main, 3.20-main, 3.21-main, 3.22-main, 3.23-main, edge-community, edge-main); fixed 2, open 309. | https://security.alpinelinux.org/vuln/CVE-2026-25749 |
debian
|
not yet assigned | CVE-2026-25749 not yet assigned priority: Debian including 1 source packages (vim), 5 status rows across 5 suites (bookworm, bullseye, forky, sid, trixie): open 3, resolved 2. | https://security-tracker.debian.org/tracker/CVE-2026-25749 |
redhat
|
medium | — | https://access.redhat.com/security/cve/CVE-2026-25749 |
suse
|
medium | CVE-2026-25749 severity moderate: SUSE including 15 source package names (gvim, vim, …), 55 product×package rows across 13 product lines (SUSE Liberty Linux 8, SUSE Liberty Linux 9, … (13 product lines)): Known Not Affected 45, Fixed 10. | https://www.suse.com/security/cve/CVE-2026-25749/ |
ubuntu
|
low | CVE-2026-25749 low priority: Ubuntu including 1 source packages (vim), 8 status rows across 8 suites (bionic, focal, jammy, noble, questing, trusty, upstream, xenial): released 8. | https://ubuntu.com/security/CVE-2026-25749 |
| URL | Tags |
|---|---|
| https://github.com/vim/vim/commit/0714b15940b245108e6e9d7aa2260dd849a26fa9 | Patch |
| https://github.com/vim/vim/releases/tag/v9.1.2132 | Product |
| https://github.com/vim/vim/security/advisories/GHSA-5w93-4g67-mm43 | Exploit Patch Vendor Advisory |