CVE-2023-39975

Exploitation

Assessed, none found. CISA's assessment recorded neither public exploit code nor evidence of exploitation when it was made.

SSVC decision

• ExploitationnoneCISA recorded no public exploit code and no evidence of exploitation.
• AutomatablenoAt least one step from reconnaissance to exploitation cannot be reliably automated.
• Technical ImpacttotalSuccessful exploitation gives total control of the vulnerable component.

CISA publishes the decision points, not a final SSVC decision. The decision also depends on mission and well-being impact, which is a property of your deployment rather than of the vulnerability.

EPSS probability

1.47% probability of exploitation activity in the next 30 days.

EPSS percentile

Ranks above 71.9% of scored records. A rank, not a probability.

NVD base score

8.8 (CVSS v3.x), scored by the NVD independently of the CNA.

NVD CVSS vector

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

NVD analysis status

Modified. NVD last modified this record on 2026-06-17.

Red Hat severity

Important. Red Hat's rating for its own products, not a CVSS rating.

Exploit-prediction scores from FIRST. Independent scoring and analysis status from the NVD. Vendor severity from Red Hat. Exploitation assessment and catalog membership from CISA.

Published

2023-08-16 00:00Z3 YR AGO

Last updated

2026-02-25 17:20Z6 MO AGO

Reserved

2023-08-07

Assigning CNA

mitre

Record state

PUBLISHED

Severity

High (CVSS 8.8)

CNA CVSS vector

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

Weaknesses

• CWE-415Double FreeVariant

Data version

5.2

Document digest

f44c57e1fe8a1a3a1fddfd7232a4abec209dcb6ea411d8e98999f5bb59d3ec82

• web.mit.eduhttps://web.mit.edu/kerberos/www/advisories/
• github.comhttps://github.com/krb5/krb5/compare/krb5-1.21.1-final...krb5-1.21.2-final
• github.comhttps://github.com/krb5/krb5/commit/88a1701b423c13991a8064feeb26952d3641d840
• security.netapp.comhttps://security.netapp.com/advisory/ntap-20230915-0014/
• security.netapp.comhttps://security.netapp.com/advisory/ntap-20240201-0008/
• security.netapp.comhttps://security.netapp.com/advisory/ntap-20240201-0005/