What is CVE-2024-26458?

CVE-2024-26458 is a medium-severity vulnerability in Mit Kerberos 5, classified under Missing Release of Memory after Effective Lifetime. CVSS score: 5.3/10. Published 2024-02-29.

How severe is CVE-2024-26458?

Medium severity. CVSS v3 base score is 5.3 out of 10.

Is CVE-2024-26458 known to be exploited?

13 public proof-of-concept repositories are indexed. Not currently listed in the CISA KEV catalog.

Vulnerability in Mit Kerberos 5

CVE-2024-26458

Kerberos 5 (aka krb5) 1.21.2 contains a memory leak in /krb5/src/lib/rpc/pmap_rmt.c.

Published 2024-02-29 · last modified 2026-06-17.

CVSS v3 metric

CVSS v3 base score 5.3 (Medium). Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:N.

EPSS exploit prediction

EPSS: 0.008 (56.7th percentile), scored 2026-10-25.

Very low probability of exploitation in the next 30 days; routine patching cadence is appropriate. 57th percentile — 56.7% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.

EPSS over last 30 days · oldest: 0.008 · newest: 0.008 · change: 0.000

Affected products

Weakness classification (CWE)

CWE-401 — Missing Release of Memory after Effective Lifetime

Public proof-of-concept exploits

References

github.com/LuMingYinDetect/krb5_defects/blob/main/krb5_detect_1.md (Exploit)
security.netapp.com/advisory/ntap-20240415-0010/ (Third Party Advisory)

Frequently asked questions

What is CVE-2024-26458?: CVE-2024-26458 is a medium-severity vulnerability in Mit Kerberos 5, classified under Missing Release of Memory after Effective Lifetime. CVSS score: 5.3/10. Published 2024-02-29.
How severe is CVE-2024-26458?: Medium severity. CVSS v3 base score is 5.3 out of 10.
Is CVE-2024-26458 known to be exploited?: 13 public proof-of-concept repositories are indexed. Not currently listed in the CISA KEV catalog.