How severe is CVE-2022-45063?

CVE-2022-45063 has a CVSS 3.x base score of 9.8, rated critical severity. It is exploitable over network with low attack complexity, requires no privileges and no user interaction. Impact on confidentiality is high, integrity high, and availability high.

Is CVE-2022-45063 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 5% (92nd percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2022-45063?

CVE-2022-45063 primarily affects Invisible-island Xterm. In total, 4 product configurations (CPEs) are listed as vulnerable; see the affected-products list for the exact versions.

How do I fix CVE-2022-45063?

Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround. Given its critical severity, prioritise patching exposed systems.

When was CVE-2022-45063 published?

CVE-2022-45063 was published on 2022-11-10 and last updated on 2026-06-17.

CVE-2022-45063

CVE-2022-45063 is a critical-severity vulnerability in Invisible-island Xterm with a CVSS 3.x base score of 9.8. It is not currently listed as actively exploited by CISA, and its EPSS exploit-prediction score is low. The underlying weakness is classified as CWE-77.

Key facts

Severity: Critical (CVSS 3.x base score 9.8)
EPSS exploit prediction: 5% (92nd percentile)
Actively exploited: Not listed in CISA KEV
Weakness: CWE-77
Affected product: Invisible-island Xterm
Published: 2022-11-10
Last modified: 2026-06-17

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.

Frequently asked questions

What is CVE-2022-45063?: 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.
How severe is CVE-2022-45063?: CVE-2022-45063 has a CVSS 3.x base score of 9.8, rated critical severity. It is exploitable over network with low attack complexity, requires no privileges and no user interaction. Impact on confidentiality is high, integrity high, and availability high.
Is CVE-2022-45063 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 5% (92nd percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2022-45063?: CVE-2022-45063 primarily affects Invisible-island Xterm. In total, 4 product configurations (CPEs) are listed as vulnerable; see the affected-products list for the exact versions.
How do I fix CVE-2022-45063?: Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround. Given its critical severity, prioritise patching exposed systems.
When was CVE-2022-45063 published?: CVE-2022-45063 was published on 2022-11-10 and last updated on 2026-06-17.

References

Affected products (4)

cpe:2.3:a:invisible-island:xterm:*:*:*:*:*:*:*:*
cpe:2.3:o:fedoraproject:fedora:35:*:*:*:*:*:*:*
cpe:2.3:o:fedoraproject:fedora:36:*:*:*:*:*:*:*
cpe:2.3:o:fedoraproject:fedora:37:*:*:*:*:*:*:*

More vulnerabilities in Invisible-island Xterm

CVE-2023-40359 — Critical (CVSS 9.8): xterm before 380 supports ReGIS reporting for character-set names even if they have unexpected characters (i.e.,…
CVE-2021-27135 — Critical (CVSS 9.8): xterm before Patch #366 allows remote attackers to execute arbitrary code or cause a denial of service (segmentation…
CVE-2008-2383 — Critical (CVSS 9.3): CRLF injection vulnerability in xterm allows user-assisted attackers to execute arbitrary commands via LF (aka \n)…
CVE-2006-7236 — Critical (CVSS 9.3): The default configuration of xterm on Debian GNU/Linux sid and possibly Ubuntu enables the allowWindowOps resource,…
CVE-2022-24130 — Medium (CVSS 5.5): xterm through Patch 370, when Sixel support is enabled, allows attackers to trigger a buffer overflow in set_sixel in…

All CVEs affecting Invisible-island Xterm →

Other CWE-77 (Command Injection) vulnerabilities

CVE-2025-70518 — Critical (CVSS 10.0): The management portal's diagnostic ping tool of Fanvil x7a firmware version 2.6.0.1182 does not handle user supplied…
CVE-2026-105484 — Critical (CVSS 10.0): A security vulnerability has been detected in TOTOLINK X6000R 9.4.0cu.652_B20230116. The impacted element is the…
CVE-2026-105134 — Critical (CVSS 10.0): A flaw has been found in Ahsay AhsayCBS up to 10.3.2. This vulnerability affects unknown code of the file…
CVE-2026-102240 — Critical (CVSS 10.0): A vulnerability was found in Netcore NAP930 0.1.241010.141410. This affects the function eval of the file…
CVE-2026-101076 — Critical (CVSS 10.0): A vulnerability was detected in Netcore NR289-GE 1.4.5102. This affects the function system of the file…
CVE-2026-101075 — Critical (CVSS 10.0): A security vulnerability has been detected in Netcore NR289-GE 1.4.5102. The impacted element is the function system of…

Browse all CWE-77 (Command Injection) vulnerabilities →