What’s Vulnerable › Vulnerabilities

CVE-2025-46805: Screen has a TOCTOU race potentially allowing to send SIGHUP, SIGCONT to privileged processes when installed setuid-root

• Severity: medium (CVSS 5.5 v3.1)
• Exploited in the wild: not listed in CISA KEV
• EPSS: 0.2% probability of exploitation in the next 30 days
• Public exploit or detection template: none known
• Published: 2025-05-26 · updated 2026-06-17
• Weakness: CWE-367

Description

Screen version 5.0.0 and older version 4 releases have a TOCTOU race potentially allowing to send SIGHUP, SIGCONT to privileged processes when installed setuid-root.

References

• https://bugzilla.suse.com/show_bug.cgi?id=CVE-2025-46805
• https://www.openwall.com/lists/oss-security/2025/05/12/1

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