CVE-2026-55693: Vim is an open source, command line text editor

Q: How do I fix CVE-2026-55693?

vim: upgrade to 9.2.0653. Exact commands for each OS are on this page.

Q: Is CVE-2026-55693 being exploited?

CVE-2026-55693 is not on the CISA Known Exploited Vulnerabilities list at the time of the last update. Check again, as this can change.

Q: What does CVE-2026-55693 affect?

CVE-2026-55693 affects vim. Severity is high (CVSS 7.8). Vim is an open source, command line text editor. Prior to 9.2.0653, the tree_count_words() function in src/spellfile.c fills in the word-count fields of a spell-file word trie by walking it iteratively with a depth counter. The counter is b

Routine

HIGH 7.8UPGRADE

CVE-2026-55693 is a high-severity flaw (CVSS 7.8) affecting vim. Below: why it ranks where it does, which versions are affected, what to do, and the exact commands.

Vim is an open source, command line text editor. Prior to 9.2.0653, the tree_count_words() function in src/spellfile.c fills in the word-count fields of a spell-file word trie by walking it iteratively with a depth counter. The counter is bounded only by the trie structure itself; it is never checked against the size of the fixed MAXWLEN-element stack arrays it indexes (arridx[], curi[], wordcount[]). A crafted .spl/.sug file pair, loaded when th

Why this priority

High severity

A fixed release or distro patch exists.

Risk facts

CVSS score	7.8 (High)
Attack vector	Local
Attack complexity	Low
Privileges needed	None
User interaction	Required
EPSS exploit chance	0.1% (top 98%)
CISA exploited list	No
Weakness	CWE-787
Published	2026-06-25
Last modified	2026-06-26

Publisher (CNA): GitHub, Inc. · Vendor: vim

Last updated 2026-06-26 · Sources: CVE Program, NVD, CISA KEV, EPSS and vendor advisories · How we score

Am I affected?

Timeline

2026-06-25 16:16 UTCPublished CVE record published
2026-06-26 14:17 UTCUpdated Record last modified

vim vim UPGRADE

Affected: < 9.2.0653

Fixed in: 9.2.0653

Safe to downgrade to: no unaffected older release

1. Check installed version

apt-cache policy vim || rpm -q vim || vim --version

2. UPGRADE to 9.2.0653 (Debian / Ubuntu)

sudo apt update && sudo apt install --only-upgrade vim

2. UPGRADE (RHEL / Amazon Linux / Fedora)

sudo dnf upgrade vim

Note

Distros often backport fixes without changing the version number. Confirm with the distro advisory or changelog.

Advisories and coverage

Official advisories

AlmaLinux Errata: [ALSA-2026:47982] Important: vim security update 2026-07-31

Verify at the official source NVD · CVE Program · Report a problem with this page
Scores and fixes here are computed automatically from those and other public sources. Confirm with the vendor advisory before changing production systems.

Quick answers

How do I fix CVE-2026-55693?

vim: upgrade to 9.2.0653. Exact commands for each OS are on this page.

Is CVE-2026-55693 being exploited?

CVE-2026-55693 is not on the CISA Known Exploited Vulnerabilities list at the time of the last update. Check again, as this can change.

What does CVE-2026-55693 affect?

CVE-2026-55693 affects vim. Severity is high (CVSS 7.8). Vim is an open source, command line text editor. Prior to 9.2.0653, the tree_count_words() function in src/spellfile.c fills in the word-count fields of a spell-file word trie by walking it iteratively with a depth counter. The counter is b

How urgent is CVE-2026-55693?

Priority 28/100. High severity

Software pages

Vim vulnerabilities

Related CVEs

CVE-2026-51400 HIGH 8.4 UPGRADE An issue in Vim Project v9.2.0389 and earlier allows a local attacker to execute arbitrary code via the vms_fi
CVE-2026-51401 HIGH 7.7 UPGRADE An issue in Vim Project v9.2.0389 and earlier allows a local attacker to execute arbitrary code via the vms_fi
CVE-2026-34982 HIGH 8.2 UPGRADE Vim is an open source, command line text editor
CVE-2026-73071 LOW 3.3 UPGRADE Vim is an open source, command line text editor
CVE-2026-73072 HIGH 7.3 UPGRADE Vim is an open source, command line text editor

References

← Back to latest CVEs