Is CVE-2023-24626 in the CISA KEV catalog?

No. CVE-2023-24626 is not currently on the CISA Known Exploited Vulnerabilities list.

What is the CVSS severity of CVE-2023-24626?

CVE-2023-24626 has a CVSS v3 base score of 6.5 (MEDIUM).

What is the EPSS score for CVE-2023-24626?

CVE-2023-24626 has an EPSS score of 0.54% (41th percentile), estimating the probability of exploitation in the next 30 days.

How do I fix CVE-2023-24626?

Upgrade screen on debian 13 to 4.9.1-1 or later. Fixes are available for 2 affected products.

CVE & CISA-KEV Catalog

CVE-2023-24626

MEDIUM

6.5

CVSS v3

NVD

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.

CWE-732Incorrect Permission Assignment for Critical Resource

How to fix

Remediation Available

screenDebian

Fixed in:4.9.1-1CVE-2023-24626

screenUbuntu

Fixed in:4.1.0~20120320gitdb59704-9ubuntu0.1~esm3USN-6198-1

Fixed in:4.3.1-2ubuntu0.1+esm1USN-6198-1

Fixed in:4.6.2-1ubuntu1.1+esm1USN-6198-1

Fixed in:4.9.0-1ubuntu0.1USN-7978-1

Fixed in:4.9.1-1ubuntu1USN-7978-1

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 VectorLocal

Attack ComplexityLow

Privileges RequiredLow

User InteractionNone

ScopeChanged

Impact

ConfidentialityNone

IntegrityNone

AvailabilityHigh

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

Exploit Intelligence

0.54%probability of exploitation in 30 days

41stpercentile

Moderate risk: more likely to be exploited than 41% of all known CVEs.

References

Patch1

git.savannah.gnu.org

Third-Party Advisory1

exploit-db.com

Other references2

Related Vulnerabilities

Other CWE-732 (Incorrect Permission Assignment for Critical Resource) vulnerabilities, ordered by exploit likelihood. View all

CVE	Severity	CVSS	EPSS	Exploited	Fix
CVE-2011-3923	Critical	9.8	89%	-	Fix
CVE-2018-15379	Critical	9.8	86%	-	-
CVE-2018-1000207	High	7.2	64%	-	-
CVE-2023-32986	High	8.8	63%	-	-
CVE-2021-44521	Critical	9.1	55%	-	Fix
CVE-2018-13374	Medium	4.3	38%	KEV + Ransom	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 2025-05-09.