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CVE-2023-0288: Heap-based Buffer Overflow in GitHub repository vim/vim prior to 9.0.1189.

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HIGH 7.8UPGRADEMITIGATEUPGRADE

CVE-2023-0288 is a high-severity flaw (CVSS 7.8) affecting macos, fedora, neovim. Below: why it ranks where it does, which versions are affected, what to do, and the exact commands.

Heap-based Buffer Overflow in GitHub repository vim/vim prior to 9.0.1189.

Why this priority

  • High severity
  • Public exploit reference

A fixed release or distro patch exists.

Risk facts

CVSS score7.8 (High)
Attack vectorLocal
Attack complexityLow
Privileges neededNone
User interactionRequired
EPSS exploit chance0.5% (top 58%)
CISA exploited listNo
WeaknessCWE-122
Published2023-01-13
Last modified2026-09-24
Publisher (CNA): huntr.dev · Vendor: apple · fedoraproject · neovim · vim

Share: LinkedIn · X · Reddit

Last updated 2026-09-24 · Sources: CVE Program, NVD, CISA KEV, EPSS and vendor advisories · How we score

Am I affected?

Timeline

apple macos UPGRADE
Affected: < 13.3
Fixed in: 13.3
Safe to downgrade to: no unaffected older release
Check your OS release
cat /etc/os-release; uname -r
Debian / Ubuntu
sudo apt update && sudo apt full-upgrade
RHEL / Amazon Linux / Fedora
sudo dnf upgrade --refresh
Windows
Install the latest cumulative update from Windows Update
If no patch exists yet
OS downgrades are not safe. Apply the vendor mitigation from the advisory and restrict exposure.
fedoraproject fedora MITIGATE
Affected: 36
Fixed in: no fixed release known
Safe to downgrade to: a release before 36
Check your OS release
cat /etc/os-release; uname -r
Debian / Ubuntu
sudo apt update && sudo apt full-upgrade
RHEL / Amazon Linux / Fedora
sudo dnf upgrade --refresh
Windows
Install the latest cumulative update from Windows Update
If no patch exists yet
OS downgrades are not safe. Apply the vendor mitigation from the advisory and restrict exposure.
neovim neovim UPGRADE
Affected: <= 0.8.3
Fixed in: newer than 0.8.3
Safe to downgrade to: no unaffected older release
1. Check installed version
apt-cache policy neovim || rpm -q neovim || neovim --version
2. UPGRADE to newer than 0.8.3 (Debian / Ubuntu)
sudo apt update && sudo apt install --only-upgrade neovim
2. UPGRADE (RHEL / Amazon Linux / Fedora)
sudo dnf upgrade neovim
Note
Distros often backport fixes without changing the version number. Confirm with the distro advisory or changelog.
vim vim UPGRADE
Affected: < 9.0.1189
Fixed in: 9.0.1189
Safe to downgrade to: no unaffected older release
1. Check installed version
apt-cache policy vim || rpm -q vim || vim --version
2. UPGRADE to 9.0.1189 (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-2023-0288?

macos: upgrade to 13.3; fedora: mitigate or apply the listed mitigation; neovim: upgrade to newer than 0.8.3. Exact commands for each OS are on this page.

Is CVE-2023-0288 being exploited?

CVE-2023-0288 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-2023-0288 affect?

CVE-2023-0288 affects macos, fedora, neovim. Severity is high (CVSS 7.8). Heap-based Buffer Overflow in GitHub repository vim/vim prior to 9.0.1189.

How urgent is CVE-2023-0288?

Priority 43/100. High severity; Public exploit reference

Software pages

GitHub vulnerabilities · macOS vulnerabilities · Vim vulnerabilities

Related CVEs

References

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