xterm before 375 allows code execution via font ops, e.g., because an OSC 50 response may…
Priority MEDIUM 58CWE-77Published · Updated
Key facts
- Attack vector
- Network
- Privileges required
- None
- User interaction
- None
- Attack complexity
- Low
- Impact type
- Code execution
- Confidentiality · integrity · availability
- High · High · High
- Fix status
- Partial Red Hat: 2 fixed, 3 without a fix
Attack profile from CVSS 3.1 · NVD. Fix status from CNA and Red Hat. Impact type from CWE-77.
Summary
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.
Why it matters now
Exploitation None reported CISA SSVC · not in CISA KEV
EPSS 0.0656 93rd percentileScored 2026-11-07
Public exploit Yes 1 exploit referenceTagged by NVD
Fix Partial Red Hat: 2 advisoriesRed Hat: 2 fixed, 3 without a fix
SSVC decision points
CISA ADP · SSVC 2.0.3
- Exploitation
- None
- Automatable
- Yes
- Technical impact
- Total
The decision (Track, Attend, Act) also depends on your mission and well-being impact; see CISA's SSVC guide.
Affected products
| Vendor | Product | Affected versions | Fixed in | Status | Source |
|---|---|---|---|---|---|
| — | — | all versions | — | No fix listed | CNA |
- — Vendor— Affected all versions Fixed in — No fix listed CNA
CPE configurations NVD · 4
| CPE | Versions | Role | Vendor |
|---|---|---|---|
| cpe:2.3:a:invisible-island:xterm:*:*:*:*:*:*:*:* | before 375 | Vulnerable | Invisible-island |
| cpe:2.3:o:fedoraproject:fedora:35:*:*:*:*:*:*:* | 35 | Vulnerable | Fedoraproject |
| cpe:2.3:o:fedoraproject:fedora:36:*:*:*:*:*:*:* | 36 | Vulnerable | Fedoraproject |
| cpe:2.3:o:fedoraproject:fedora:37:*:*:*:*:*:*:* | 37 | Vulnerable | Fedoraproject |
- cpe:2.3:a:invisible-island:xterm:*:*:*:*:*:*:*:* Versions before 375 Vulnerable ·Invisible-island
- cpe:2.3:o:fedoraproject:fedora:35:*:*:*:*:*:*:* Versions 35 Vulnerable ·Fedoraproject
- cpe:2.3:o:fedoraproject:fedora:36:*:*:*:*:*:*:* Versions 36 Vulnerable ·Fedoraproject
- cpe:2.3:o:fedoraproject:fedora:37:*:*:*:*:*:*:* Versions 37 Vulnerable ·Fedoraproject
Remediation
Red Hat 2 advisories
- RHSA-2026:92418 Released 2026-10-29 · Red Hat rating Moderatexterm security update
- Red Hat Enterprise Linux AppStream E4S (v.9.4) xterm-366-9.el9_4.1, xterm-resize-366-9.el9_4.1
- RHSA-2025:7427 Released 2025-05-13 · Red Hat rating Lowxterm security update
- Red Hat Enterprise Linux AppStream (v. 9) xterm-366-10.el9_6, xterm-resize-366-10.el9_6
Vendor assessments
Red Hat
Red Hat rating: Moderate. Red Hat's page for this CVE →
| Product | Status | Plan or fix |
|---|---|---|
| Red Hat Enterprise Linux 8 | Affected | No fix planned: Will not fix |
| Red Hat OpenShift Container Platform 3.11 | Affected | No fix planned: Out of support scope |
| Red Hat OpenShift Virtualization 4 | Affected | No fix yet |
| Red Hat Enterprise Linux AppStream (v. 9) | Fixed | RHSA-2025:7427 |
| Red Hat Enterprise Linux AppStream E4S (v.9.4) | Fixed | RHSA-2026:92418 |
Not affected: 6 products
- Red Hat Enterprise Linux 6
- Red Hat Enterprise Linux 7
- Red Hat Enterprise Linux 8
- Red Hat Enterprise Linux 9
- Red Hat OpenShift Container Platform 4
- Red Hat Virtualization 4
Timeline
- 2026-10-02 Threatist record created from CVE-2022-45063
- 2026-10-03 Alias added: GHSA-3cch-wj7f-8g8x
- 2026-10-30 Fix available: RHSA-2026:92418 · Red Hat
- 2026-10-30 Fix available: Red Hat Enterprise Linux AppStream E4S (v.9.4) · Red Hat
References
Patch 3
Advisory 5
Sources
- CVE-2022-45063 · CVE Program
- CVE-2022-45063 · NVD
- FIRST EPSS
- GHSA-3cch-wj7f-8g8x · GitHub Advisory Database · CC BY 4.0
- CVE-2022-45063 · Red Hat security data · CC BY 4.0
This product uses the NVD API but is not endorsed or certified by the NVD. Sources and licences