CVE-2022-48624: close_altfile in filename.c in less before 606 omits shell_quote calls for LESSCLOSE.

Q: How do I fix CVE-2022-48624?

less: upgrade to 606. Exact commands for each OS are on this page.

Q: Is CVE-2022-48624 being exploited?

CVE-2022-48624 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-2022-48624 affect?

CVE-2022-48624 affects less. Severity is high (CVSS 7.8). close_altfile in filename.c in less before 606 omits shell_quote calls for LESSCLOSE.

This month

HIGH 7.8UPGRADE

CVE-2022-48624 is a high-severity flaw (CVSS 7.8) affecting less. Below: why it ranks where it does, which versions are affected, what to do, and the exact commands.

close_altfile in filename.c in less before 606 omits shell_quote calls for LESSCLOSE.

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	Low
User interaction	None
EPSS exploit chance	1.1% (top 36%)
CISA exploited list	No
Weakness	CWE-78
Published	2024-02-19
Last modified	2026-06-17

Publisher (CNA): MITRE · Vendor: greenwoodsoftware

Last updated 2026-06-17 · Sources: CVE Program, NVD, CISA KEV, EPSS and vendor advisories · How we score

Am I affected?

Timeline

2024-02-19 01:15 UTCPublished CVE record published
2026-06-17 05:15 UTCUpdated Record last modified

greenwoodsoftware less UPGRADE

Affected: < 606

Fixed in: 606

Safe to downgrade to: no unaffected older release

1. Check installed version

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

2. UPGRADE to 606 (Debian / Ubuntu)

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

2. UPGRADE (RHEL / Amazon Linux / Fedora)

sudo dnf upgrade less

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-2022-48624?

less: upgrade to 606. Exact commands for each OS are on this page.

Is CVE-2022-48624 being exploited?

CVE-2022-48624 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-2022-48624 affect?

CVE-2022-48624 affects less. Severity is high (CVSS 7.8). close_altfile in filename.c in less before 606 omits shell_quote calls for LESSCLOSE.

How urgent is CVE-2022-48624?

Priority 43/100. High severity

Related CVEs

CVE-2024-32487 HIGH 8.6 UPGRADE MITIGATE less through 653 allows OS command execution via a newline character in the name of a file, because quoting is

References

← Back to latest CVEs