CVE-2026-73070: Vim is an open source, command line text editor

Q: How do I fix CVE-2026-73070?

vim: upgrade to 9.2.0842. Exact commands for each OS are on this page.

Q: Is CVE-2026-73070 being exploited?

CVE-2026-73070 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-2026-73070 affect?

CVE-2026-73070 affects vim. Severity is medium (CVSS 5.5). Vim is an open source, command line text editor. Prior to 9.2.0842, the socket server backend in src/socketserver.c accepts unbounded client connections in socketserver_accept(), causing descriptors to overflow fd_set structures in src/chan

Q: How urgent is CVE-2026-73070?

Priority 21/100. No elevated risk signals yet.

Routine

MEDIUM 5.5UPGRADE

CVE-2026-73070 is a medium-severity flaw (CVSS 5.5) 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 9.2.0842, the socket server backend in src/socketserver.c accepts unbounded client connections in socketserver_accept(), causing descriptors to overflow fd_set structures in src/channel.c and fixed-size struct pollfd arrays in src/os_unix.c, which allows a local process that can connect to the server socket to corrupt stack memory or terminate the Vim server. This issue is fixed in version

Why this priority

No elevated risk signals yet

A fixed release or distro patch exists.

Risk facts

CVSS score	5.5 (Medium)
Attack vector	Local
Attack complexity	Low
Privileges needed	Low
User interaction	None
EPSS exploit chance	0.2% (top 92%)
CISA exploited list	No
Weakness	CWE-121
Published	2026-08-11
Last modified	2026-09-18

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

Last updated 2026-09-18 · Sources: CVE Program, NVD, CISA KEV, EPSS and vendor advisories · How we score

Am I affected?

Timeline

2026-08-11 16:17 UTCPublished CVE record published
2026-09-18 14:47 UTCUpdated Record last modified

vim vim UPGRADE

Affected: < 9.2.0842

Fixed in: 9.2.0842

Safe to downgrade to: no unaffected older release

1. Check installed version

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

2. UPGRADE to 9.2.0842 (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.

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-2026-73070?

vim: upgrade to 9.2.0842. Exact commands for each OS are on this page.

Is CVE-2026-73070 being exploited?

CVE-2026-73070 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-2026-73070 affect?

CVE-2026-73070 affects vim. Severity is medium (CVSS 5.5). Vim is an open source, command line text editor. Prior to 9.2.0842, the socket server backend in src/socketserver.c accepts unbounded client connections in socketserver_accept(), causing descriptors to overflow fd_set structures in src/chan

How urgent is CVE-2026-73070?

Priority 21/100. No elevated risk signals yet.

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

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