Is CVE-2010-1321 in the CISA KEV catalog?

No. CVE-2010-1321 is not currently on the CISA Known Exploited Vulnerabilities list.

What is the CVSS severity of CVE-2010-1321?

CVE-2010-1321 has a CVSS v2 base score of 6.8 (MEDIUM).

What is the EPSS score for CVE-2010-1321?

CVE-2010-1321 has an EPSS score of 6.88% (93th percentile), estimating the probability of exploitation in the next 30 days.

How do I fix CVE-2010-1321?

Upgrade heimdal on debian 11 to 1.4.0~git20100605.dfsg.1-1 or later.

CVE & CISA-KEV Catalog

CVE-2010-1321

MEDIUMEPSS 93th pctl

6.8

CVSS v2

NVD

Description

The kg_accept_krb5 function in krb5/accept_sec_context.c in the GSS-API library in MIT Kerberos 5 (aka krb5) through 1.7.1 and 1.8 before 1.8.2, as used in kadmind and other applications, does not properly check for invalid GSS-API tokens, which allows remote authenticated users to cause a denial of service (NULL pointer dereference and daemon crash) via an AP-REQ message in which the authenticator's checksum field is missing.

CWE-476NULL Pointer Dereference

How to fix

Remediation Available

heimdalDebian

Fixed in:1.4.0~git20100605.dfsg.1-1CVE-2010-1321

Remediation is compiled from vendor and distribution security advisories. Always confirm against the linked source for your exact version and platform.

CVSS v2 Vector

No CVSS vector data available.

Exploit Intelligence

6.88%probability of exploitation in 30 days

93rdpercentile

High risk: more likely to be exploited than 93% of all known CVEs.

References

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 2026-04-29.