CVE-2026-25749
Publication date 6 February 2026
Last updated 18 March 2026
Ubuntu priority
Description
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.
Why is this CVE low priority?
Input that can cause a buffer overflow is supplied by the user
Status
| Package | Ubuntu Release | Status |
|---|---|---|
| vim | 25.10 questing |
Fixed 2:9.1.0967-1ubuntu6.1
|
| 24.04 LTS noble |
Fixed 2:9.1.0016-1ubuntu7.10
|
|
| 22.04 LTS jammy |
Fixed 2:8.2.3995-1ubuntu2.26
|
|
| 20.04 LTS focal |
Fixed 2:8.1.2269-1ubuntu5.32+esm2
|
|
| 18.04 LTS bionic |
Fixed 2:8.0.1453-1ubuntu1.13+esm14
|
|
| 16.04 LTS xenial |
Fixed 2:7.4.1689-3ubuntu1.5+esm29
|
|
| 14.04 LTS trusty |
Fixed 2:7.4.052-1ubuntu3.1+esm23
|
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Get Ubuntu Pro 30-day free trialSeverity score breakdown
| Parameter | Value |
|---|---|
| Base score |
6.6 · Medium
|
| Attack vector | Local |
| Attack complexity | Low |
| Privileges required | Low |
| User interaction | Required |
| Scope | Unchanged |
| Confidentiality | None |
| Integrity impact | High |
| Availability impact | High |
| Vector | CVSS:3.1/AV:L/AC:L/PR:L/UI:R/S:U/C:N/I:H/A:H |
References
Related Ubuntu Security Notices (USN)
- USN-8101-1
- Vim vulnerabilities
- 16 March 2026