Is CVE-2026-24883 in the CISA KEV catalog?

No. CVE-2026-24883 is not currently on the CISA Known Exploited Vulnerabilities list.

What is the CVSS severity of CVE-2026-24883?

CVE-2026-24883 has a CVSS v3 base score of 3.7 (LOW).

What is the EPSS score for CVE-2026-24883?

CVE-2026-24883 has an EPSS score of 0.45% (36th percentile), estimating the probability of exploitation in the next 30 days.

How do I fix CVE-2026-24883?

Upgrade gnupg to 2.5.17 or later. Fixes are available for 2 affected products.

CVE & CISA-KEV Catalog

CVE-2026-24883

LOW

3.7

CVSS v3

NVD

Description

In GnuPG before 2.5.17, a long signature packet length causes parse_signature to return success with sig->data[] set to a NULL value, leading to a denial of service (application crash).

CWE-476NULL Pointer Dereference

How to fix

Remediation Available

gnupgNVD

Affected:>= 2.5.13, < 2.5.17Fixed in:2.5.17CVE-2026-24883derived from NVD

gpg4winNVD

Affected:>= 5.0.0, < 5.0.1Fixed in:5.0.1CVE-2026-24883derived from NVD

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 VectorNetwork

Attack ComplexityHigh

Privileges RequiredNone

User InteractionNone

ScopeUnchanged

Impact

ConfidentialityNone

IntegrityNone

AvailabilityLow

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

Exploit Intelligence

0.45%probability of exploitation in 30 days

36thpercentile

Low risk: more likely to be exploited than 36% of all known CVEs.

References

Patch1

dev.gnupg.org

Third-Party Advisory1

openwall.com

Related Vulnerabilities

Other CWE-476 (NULL Pointer Dereference) vulnerabilities, ordered by exploit likelihood. View all

CVE	Severity	CVSS	EPSS	Exploited	Fix
CVE-2023-21758	High	7.5	92%	-	Fix
CVE-2023-21547	High	7.5	88%	-	Fix
CVE-2014-3470	Medium	4.3	86%	-	Fix
CVE-2021-44224	High	8.2	82%	-	Fix
CVE-2016-0742	High	7.5	82%	-	Fix
CVE-2009-1386	Medium	5.0	80%	-	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 2026-02-06.