CVE-2023-24626

Name: CVE-2023-24626
Creator: NVD / NIST
Published: 2023-04-08T05:15:07.063+00:00
License: https://creativecommons.org/publicdomain/zero/1.0/

MEDIUMCVSS 6.5/10EPSS 0.54%

Last modified Jun 17, 2026

CVE-2023-24626 is a medium-severity vulnerability rated 6.5/10 on the CVSS scale. socket.c in GNU Screen through 4.9.0, when installed setuid or setgid (the default on platforms such as Arch Linux and FreeBSD), allows local users to send a privileged SIGHUP signal to any PID, causing a denial of service or disruption of the target process.. EPSS estimates a 0.54% chance of exploitation in the next 30 days.

Description

socket.c in GNU Screen through 4.9.0, when installed setuid or setgid (the default on platforms such as Arch Linux and FreeBSD), allows local users to send a privileged SIGHUP signal to any PID, causing a denial of service or disruption of the target process.

Metrics

CVSS 3.1

6.5/10

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

EPSS Probability

0.54%

41.2th percentile

Probability of exploitation in the next 30 days. Learn more

Weakness Enumeration

CWE-732

Affected Software

Vendor	Product	Versions
Gnu	Screen	<= 4.9.0

References

https://git.savannah.gnu.org/cgit/screen.git/patch/?id=e9ad41bfedb4537a6f0de20f00b27c7739f168f7Mailing List, Patch
https://savannah.gnu.org/bugs/?63195Permissions Required
https://www.exploit-db.com/exploits/51252Third Party Advisory, VDB Entry
https://git.savannah.gnu.org/cgit/screen.git/patch/?id=e9ad41bfedb4537a6f0de20f00b27c7739f168f7Mailing List, Patch
https://savannah.gnu.org/bugs/?63195Permissions Required
https://security.netapp.com/advisory/ntap-20250509-0003/
https://www.exploit-db.com/exploits/51252Third Party Advisory, VDB Entry
https://www.exploit-db.com/exploits/51252Third Party Advisory, VDB Entry

Timeline

Published: Apr 8, 2023
Last Modified: Jun 17, 2026
Status: Modified

Frequently Asked Questions

What is CVE-2023-24626?

How severe is CVE-2023-24626?

CVE-2023-24626 has a CVSS score of 6.5/10 (MEDIUM severity). The EPSS model estimates a 0.54% probability of exploitation in the next 30 days.

How do I fix CVE-2023-24626?

Check the vendor references and advisories linked above for patched versions and mitigation guidance. You can also run a Strix scan to test if your systems are affected.

Are you affected by CVE-2023-24626?

Run a free Strix scan to check your systems for this vulnerability.

Scan your code now

Source: NVD / NIST