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Vulnerability record · CVE-2022-4170 · published 9 December 2022

CVE-2022-4170: Rxvt-unicode project rxvt-unicode injection vulnerability

RRxvt Unicode Project · Rxvt Unicode

The rxvt-unicode package is vulnerable to a remote code execution, in the Perl background extension, when an attacker can control the data written to the user's terminal and certain options are set.

9.8 CVSS 3.1 Critical EPSS 2.1% · top 18.5% CWE-74 · Injection
9.8CVSS 3.1 base score
2.1%EPSS exploitation probability, 30 days
NoNot in CISA KEV
3Affected product versions listed by NVD
6References
17 Jun 2026Last modified by NVD

Description

The rxvt-unicode package is vulnerable to a remote code execution, in the Perl background extension, when an attacker can control the data written to the user's terminal and certain options are set.

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

Affected products

3 vulnerable configurations from NVD's CPE data, grouped by vendor and product.

References

LinkTags
https://bugzilla.redhat.com/show_bug.cgi?id=2151597 Issue TrackingThird Party Advisory
https://security.gentoo.org/glsa/202310-20 Third Party Advisory
https://www.openwall.com/lists/oss-security/2022/12/05/1 Mailing ListThird Party Advisory
https://bugzilla.redhat.com/show_bug.cgi?id=2151597 Issue TrackingThird Party Advisory
https://security.gentoo.org/glsa/202310-20 Third Party Advisory
https://www.openwall.com/lists/oss-security/2022/12/05/1 Mailing ListThird Party Advisory

Track CVE-2022-4170 inside VULONE

Watch it alongside the ransomware crews, C2 infrastructure and forum chatter that reference it, query it through the API and pull it into your SIEM over TAXII.

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Same products first, then exploited flaws of the same weakness class.

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Source: NIST National Vulnerability Database (record CVE-2022-4170), CISA KEV, FIRST EPSS (scores of 2026-10-08). This page is refreshed as NVD updates the record.