Is CVE-2022-45063 in the CISA KEV catalog?

No. CVE-2022-45063 is not currently on the CISA Known Exploited Vulnerabilities list.

What is the CVSS severity of CVE-2022-45063?

CVE-2022-45063 has a CVSS v3 base score of 9.8 (CRITICAL).

What is the EPSS score for CVE-2022-45063?

CVE-2022-45063 has an EPSS score of 4.95% (91th percentile), estimating the probability of exploitation in the next 30 days.

How do I fix CVE-2022-45063?

Upgrade xterm on debian 12 to 375-1 or later. Fixes are available for 11 affected products.

CVE & CISA-KEV Catalog

CVE-2022-45063

CRITICALEPSS 91th pctl

9.8

CVSS v3

NVD

Description

xterm before 375 allows code execution via font ops, e.g., because an OSC 50 response may have Ctrl-g and therefore lead to command execution within the vi line-editing mode of Zsh. NOTE: font ops are not allowed in the xterm default configurations of some Linux distributions.

CWE-77Command Injection

How to fix

Remediation Available

xtermDebian

Fixed in:375-1CVE-2022-45063

xtermRocky

Fixed in:0:366-10.el9_6RHSA-2025:7427

xtermRed Hat / RHEL

Fixed in:0:366-10.el9_6RHSA-2025:7427

xterm-debuginfoRocky

Fixed in:0:366-10.el9_6RHSA-2025:7427

xterm-debuginfoRed Hat / RHEL

Fixed in:0:366-10.el9_6RHSA-2025:7427

xterm-debugsourceRed Hat / RHEL

Fixed in:0:366-10.el9_6RHSA-2025:7427

xterm-debugsourceRocky

Fixed in:0:366-10.el9_6RHSA-2025:7427

xterm-resizeRed Hat / RHEL

Fixed in:0:366-10.el9_6RHSA-2025:7427

xterm-resizeRocky

Fixed in:0:366-10.el9_6RHSA-2025:7427

xterm-resize-debuginfoRocky

Fixed in:0:366-10.el9_6RHSA-2025:7427

xterm-resize-debuginfoRed Hat / RHEL

Fixed in:0:366-10.el9_6RHSA-2025:7427

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

4.95%probability of exploitation in 30 days

91stpercentile

High risk: more likely to be exploited than 91% of all known CVEs.

References

Patch3

Exploit1

news.ycombinator.com

Vendor Advisory1

invisible-island.net

Third-Party Advisory1

security.gentoo.org

Other references7

Related Vulnerabilities

Other CWE-77 (Command Injection) vulnerabilities, ordered by exploit likelihood. View all

CVE	Severity	CVSS	EPSS	Exploited	Fix
CVE-2024-3400	Critical	10.0	100%	KEV + Ransom	-
CVE-2024-21887	Critical	9.1	100%	KEV + Ransom	-
CVE-2023-1671	Critical	9.8	100%	KEV	Fix
CVE-2023-1389	High	8.8	100%	KEV	Fix
CVE-2021-1498	Critical	9.8	100%	KEV	Fix
CVE-2012-1823	Critical	9.8	100%	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 2026-04-08.