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Fencer Vulns
medium 4.0

CVE-2023-5344 json

Heap-based Buffer Overflow in vim/vim

published 2023-10-02 3 y ago modified 2026-06-17 4 mo ago also EUVD-2023-57661

cvss
4.0
version 3.0, CNA
cisa kev
Not listed
not in CISA's catalog
epss
1.3%
EPSS 1.3% chance of exploitation in 30 days, percentile 70%
public exploits
0
none known

Summary

Heap-based Buffer Overflow in GitHub repository vim/vim prior to 9.0.1969.

Patch / fix

  • vim vim/vim 9.0.1969
  • vim Debian 12 2:9.0.1378-2+deb12u1
  • vim Debian 14, Debian 13 2:9.0.2018-1

debian advisories DEBIAN-CVE-2023-5344

  • vim Ubuntu 20.04 LTS 2:8.1.2269-1ubuntu5.20
  • vim Ubuntu 22.04 LTS 2:8.2.3995-1ubuntu2.13
  • vim Ubuntu Pro 14.04 LTS 2:7.4.052-1ubuntu3.1+esm14
  • vim Ubuntu Pro 16.04 LTS 2:7.4.1689-3ubuntu1.5+esm20
  • vim Ubuntu Pro 18.04 LTS 2:8.0.1453-1ubuntu1.13+esm6

ubuntu advisories UBUNTU-CVE-2023-5344

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 SP3, SLES for SAP 15 SP2, SLES for SAP 15 SP1 +17 more 9.0.2103-150000.5.57.1
  • vim SLES for SAP 12 SP5, SLES 12 SP5 9.0.2103-17.26.1
  • vim SLE Module for Desktop Applications 15 SP5, SLE Module for Basesystem 15 SP5, SLE Micro 5.5 +1 more 9.0.2103-150500.20.6.1

suse advisories SUSE-SU-2023:4587-1SUSE-SU-2023:4560-1SUSE-SU-2023:4557-1

  • vim Alpine 3.18 9.0.2073-r0
  • vim Alpine 3.24, Alpine 3.23, Alpine 3.22 +3 more 9.0.1994-r0

alpine advisories ALPINE-CVE-2023-5344

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 CBL-Mariner 2.0 9.0.2010-1

azure linux advisories AZL-31041

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-2023-5344 updated cvss 5.3

vim: Heap-based Buffer Overflow in trunc_string()

  • 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
    affected: workaround, no fix planned “Untrusted vim scripts with -s [scriptin] are not recommended to run.”
  • 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
    affected: workaround, no fix available “Untrusted vim scripts with -s [scriptin] are not recommended to run.”
  • 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
Proof of concept is public
Automatable
no
Technical impact
partial
Assessed
16 mo ago

Exploit prediction

1.27% chance of exploitation in the next 30 days, higher than 70% of all scored CVEs (FIRST EPSS, 2026-11-08).

Exploits and checks

  • huntr.dev https://huntr.dev/bounties/530cb762-899e-48d7-b50e-dad09eb775bf referenced PoC, tagged "exploit" by a source, unverified

CVSS scores

assigned by version score vector
CNA 3.0 4.0 CVSS:3.0/AV:L/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:L
NVD 3.1 7.5 CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H

Affected products

  • vim 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.