Is CVE-2022-4170 in the CISA KEV catalog?

No. CVE-2022-4170 is not currently on the CISA Known Exploited Vulnerabilities list.

What is the CVSS severity of CVE-2022-4170?

CVE-2022-4170 has a CVSS v3 base score of 9.8 (CRITICAL).

What is the EPSS score for CVE-2022-4170?

CVE-2022-4170 has an EPSS score of 2.06% (79th percentile), estimating the probability of exploitation in the next 30 days.

How do I fix CVE-2022-4170?

Upgrade rxvt-unicode on debian 13 to 9.31-1 or later.

CVE & CISA-KEV Catalog

CVE-2022-4170

CRITICALEPSS 79th pctl

9.8

CVSS v3

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.

CWE-74Injection

How to fix

Remediation Available

rxvt-unicodeDebian

Fixed in:9.31-1CVE-2022-4170

Remediation is compiled from vendor and distribution security advisories. Always confirm against the linked source for your exact version and platform.

CVSS v3 Vector

Exploitability

Attack VectorNetwork

Attack ComplexityLow

Privileges RequiredNone

User InteractionNone

ScopeUnchanged

Impact

ConfidentialityHigh

IntegrityHigh

AvailabilityHigh

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

Exploit Intelligence

2.06%probability of exploitation in 30 days

79thpercentile

Elevated risk: more likely to be exploited than 79% of all known CVEs.

References

Third-Party Advisory3

Related Vulnerabilities

Other CWE-74 (Injection) vulnerabilities, ordered by exploit likelihood. View all

CVE	Severity	CVSS	EPSS	Exploited	Fix
CVE-2013-2251	Critical	9.8	100%	KEV	Fix
CVE-2023-22527	Critical	9.8	100%	KEV + Ransom	Fix
CVE-2019-2725	Critical	9.8	100%	KEV + Ransom	Fix
CVE-2022-46169	Critical	9.8	100%	KEV	Fix
CVE-2022-35914	Critical	9.8	100%	KEV	-
CVE-2019-17558	High	7.5	99%	KEV	Fix

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This product uses NVD data but is not endorsed or certified by the NVD. EPSS scores courtesy of FIRST.org (https://www.first.org/epss). Source: CISA KEV Catalog. Data as of 2025-04-14.