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Fencer Vulns
medium 5.3

CVE-2026-28419 json

Vim has Heap-based Buffer Underflow in Emacs tags parsing

published 2026-02-27 8 mo ago modified 2026-06-17 4 mo ago also EUVD-2026-9087

cvss
5.3
version 3.1, CNA
cisa kev
Not listed
not in CISA's catalog
epss
0.2%
EPSS 0.2% chance of exploitation in 30 days, percentile 9%
public exploits
0
none known

Summary

Vim is an open source, command line text editor. Prior to version 9.2.0075, a heap-based buffer underflow exists in Vim's Emacs-style tags file parsing logic. When processing a malformed tags file where a delimiter appears at the start of a line, Vim attempts to read memory immediately preceding the allocated buffer. Version 9.2.0075 fixes the issue.

Patch / fix

  • vim vim 9.2.0075
  • vim Debian 13 2:9.1.1230-2+deb13u1
  • vim Debian 14 2:9.2.0119-1

debian advisories DEBIAN-CVE-2026-28419

  • vim Ubuntu 22.04 LTS 2:8.2.3995-1ubuntu2.26
  • vim Ubuntu 24.04 LTS 2:9.1.0016-1ubuntu7.10
  • vim Ubuntu 25.10 2:9.1.0967-1ubuntu6.1
  • vim Ubuntu 26.04 LTS 2:9.1.2141-1ubuntu2
  • vim Ubuntu Pro 14.04 LTS 2:7.4.052-1ubuntu3.1+esm23
  • vim Ubuntu Pro 16.04 LTS 2:7.4.1689-3ubuntu1.5+esm29
  • vim Ubuntu Pro 18.04 LTS 2:8.0.1453-1ubuntu1.13+esm14
  • vim Ubuntu Pro 20.04 LTS 2:8.1.2269-1ubuntu5.32+esm2

ubuntu advisories UBUNTU-CVE-2026-28419

Ubuntu security data © Canonical Ltd., from https://github.com/canonical/ubuntu-security-notices via OSV; changed: normalised to fixed package versions per release. CC BY-SA 4.0

  • vim SLES for SAP 15 SP4, SLES 15 SP4-LTSS, SLE Micro 5.4 +4 more 9.2.0110-150000.5.86.1
  • vim SLES for SAP 15 SP6, SLES for SAP 15 SP5, SLES 15 SP6-LTSS +7 more 9.2.0110-150500.20.43.1
  • vim SLES LTSS Extended Security 12 SP5, SLES 12 SP5-LTSS 9.2.0110-17.59.1

suse advisories SUSE-SU-2026:1051-1SUSE-SU-2026:1095-1SUSE-SU-2026:0910-1

  • vim Alpine 3.24, Alpine 3.23 9.2.0078-r0

alpine advisories ALPINE-CVE-2026-28419

Alpine secdb © Alpine Linux, from https://secdb.alpinelinux.org via OSV; changed: normalised to fixed package versions per release. CC BY-SA 4.0

  • vim Azure Linux 3.0 9.2.0088-1

azure linux advisories AZL-78509

Azure Linux vulnerability data, Copyright (c) Microsoft Corporation, from https://github.com/microsoft/AzureLinuxVulnerabilityData via OSV, under the MIT licence; changed: normalised to fixed package versions per release. MIT

Vendor advisories

What the vendors themselves say about their products: affected, fixed or not affected, and what to do.

red hat product security vex CVE-2026-28419 updated cvss 5.3

vim: Vim: Information disclosure and denial of service via malformed tags file

  • Red Hat Enterprise Linux 6 vim, vim-X11, vim-common, vim-minimal, vim-enhanced, vim-filesystem Red Hat Enterprise Linux 7 vim, vim-X11, vim-common, vim-minimal, vim-enhanced, vim-filesystem Red Hat Enterprise Linux 8 vim, vim-X11, vim-common, vim-minimal, vim-enhanced, vim-filesystem Red Hat Enterprise Linux 9 vim, vim-X11, vim-common, vim-minimal, vim-enhanced, vim-filesystem Red Hat Enterprise Linux 10 vim Red Hat OpenShift Container Platform 4 openshift/ose-rhel-coreos-8, openshift/ose-rhel-coreos-9
    affected: workaround, no fix available “Fix deferred”
  • Red Hat OpenShift AI (RHOAI) rhoai/odh-dashboard-rhel9
    under investigation

Red Hat CSAF VEX © Red Hat, Inc., from https://security.access.redhat.com/data/csaf/v2/vex/; changed: reduced to product statuses and remediations. CC BY 4.0 · csaf

CISA SSVC

Exploitation
none
Automatable
no
Technical impact
partial
Assessed
8 mo ago

Exploit prediction

0.20% chance of exploitation in the next 30 days, higher than 9% of all scored CVEs (FIRST EPSS, 2026-11-08).

CVSS scores

assigned by version score vector
CNA 3.1 5.3 CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:L/I:L/A:L
NVD 3.1 6.6 CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:L/I:L/A:H

Affected products

  • vim vim

Classification

Weakness

References

Sources

Fencer Vulns keeps one entry per vulnerability: the CVE id wins, then GHSA, and records that alias each other are merged, except that two CVEs always keep separate entries. The same data is available as JSON.

CPEs and fixed versions use Anchore's correction of NVD's data: Added CPE configurations because not yet analyzed by NVD.