CVE-2006-0126: rxvt-unicode before 6.3, on certain platforms that use openpty and non-Unix pty devices such as Linux and most

Q: How do I fix CVE-2006-0126?

rxvt-unicode: upgrade to newer than 6.2. Exact commands for each OS are on this page.

Q: Is CVE-2006-0126 being exploited?

CVE-2006-0126 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-2006-0126 affect?

CVE-2006-0126 affects rxvt-unicode. Severity is medium (CVSS 4.6). rxvt-unicode before 6.3, on certain platforms that use openpty and non-Unix pty devices such as Linux and most BSD platforms, does not maintain the intended permissions of tty devices, which allows local users to gain read and write access

Q: How urgent is CVE-2006-0126?

Priority 29/100. On your watchlist

Routine

MEDIUM 4.6WATCHLISTUPGRADE

CVE-2006-0126 is a medium-severity flaw (CVSS 4.6) affecting rxvt-unicode. Below: why it ranks where it does, which versions are affected, what to do, and the exact commands.

rxvt-unicode before 6.3, on certain platforms that use openpty and non-Unix pty devices such as Linux and most BSD platforms, does not maintain the intended permissions of tty devices, which allows local users to gain read and write access to the devices.

Why this priority

On your watchlist

A fixed release or distro patch exists.

Risk facts

CVSS score	4.6 (Medium)
EPSS exploit chance	0.4% (top 67%)
CISA exploited list	No
Published	2006-01-09
Last modified	2026-06-16

Publisher (CNA): MITRE · Vendor: rxvt-unicode

Last updated 2026-06-16 · Sources: CVE Program, NVD, CISA KEV, EPSS and vendor advisories · How we score

Am I affected?

Timeline

2006-01-09 11:03 UTCPublished CVE record published
2026-06-16 22:19 UTCUpdated Record last modified

rxvt-unicode rxvt-unicode UPGRADE

Affected: <= 6.2

Fixed in: newer than 6.2

Safe to downgrade to: no unaffected older release

1. Check installed version

apt-cache policy rxvt-unicode || rpm -q rxvt-unicode || rxvt-unicode --version

2. UPGRADE to newer than 6.2 (Debian / Ubuntu)

sudo apt update && sudo apt install --only-upgrade rxvt-unicode

2. UPGRADE (RHEL / Amazon Linux / Fedora)

sudo dnf upgrade rxvt-unicode

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-2006-0126?

rxvt-unicode: upgrade to newer than 6.2. Exact commands for each OS are on this page.

Is CVE-2006-0126 being exploited?

CVE-2006-0126 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-2006-0126 affect?

CVE-2006-0126 affects rxvt-unicode. Severity is medium (CVSS 4.6). rxvt-unicode before 6.3, on certain platforms that use openpty and non-Unix pty devices such as Linux and most BSD platforms, does not maintain the intended permissions of tty devices, which allows local users to gain read and write access

How urgent is CVE-2006-0126?

Priority 29/100. On your watchlist

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References

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