CVE-2023-39975

highpriority · track · 36EPSS 0.015 · 74 %ileDEEUUS

grimoire priorityP2 · Scheduled

Exploitable?

—

no known exploitation

Likely / severe?

1.47% (74th) EPSS

CVSS 8.8 · high

Is it mine?

9 products

Check your exposure

Who says so?

4 sources

cnnvd · enisa_euvd · cert_bund · nvd

EPSS · scored 2026-10-27

kdc/do_tgs_req.c in MIT Kerberos 5 (aka krb5) 1.21 before 1.21.2 has a double free that is reachable if an authenticated user can trigger an authorization-data handling failure. Incorrect data is copied from one ticket to another.

cvss

Technical severity, 0–10. One row per scoring source.

8.8

010

base score 0–10 · higher = more severe · hover a vector to decode

v3.18.8highCVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:Hprimary · NVD / NIST USexploitability 2.8 · impact 5.9

v3.18.8highCVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:Hsecondary · ENISA EU

v3.18.8highCVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:Hsecondaryexploitability 2.8 · impact 5.9

v3.18.1highCVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H/E:Usecondary · CVSS-BT (t0sche)

ssvc

A stakeholder decision — act, attend, or track — from exploitation and impact.

Exploitation: none · Automatable: no · Technical Impact: totalcoordinatorcisa_ssvcUS

weaknesses

The CWE weakness classes this flaw belongs to.

CWE-415USprimary

affected products (9)

Products and version ranges known to be affected.

Gentoo Linuxall versionscert_bundDEcpe:/o:gentoo:linux:-
IBM Security Guardium 12.0all versionscert_bundDEcpe:/a:ibm:security_guardium:12.0
MIT Kerberos <krb5-1.21-3.fc38all versionscert_bundDE
RESF Rocky Linuxall versionscert_bundDEcpe:/o:resf:rocky_linux:-
Red Hat Enterprise Linuxall versionscert_bundDEcpe:/o:redhat:enterprise_linux:-
Xerox FreeFlow Print Server v9all versionscert_bundDEcpe:/a:xerox:freeflow_print_server:v9
MIT Kerberos< krb5-1.21-3.fc38cert_bundDE
n/a n/a≤ n/aenisa_euvdEU
mit kerberos 51.21 → 1.21.2nvdUScpe:2.3:a:mit:kerberos_5:*:*:*:*:*:*:*:*

advisories (3)

Vendor and ecosystem advisories describing this.

WID-SEC-W-2023-2035MIT Kerberos: Schwachstelle ermöglicht Denial of ServiceDeutsch2023-08-10csaf · cert_bundDE
Ein entfernter, anonymer Angreifer kann eine Schwachstelle in MIT Kerberos ausnutzen, um einen Denial of Service Angriff durchzuführen.
WID-SEC-W-2024-0119Oracle MySQL: Mehrere SchwachstellenDeutsch2024-01-16csaf · cert_bundDE
Ein entfernter, anonymer oder authentisierter Angreifer kann mehrere Schwachstellen in Oracle MySQL ausnutzen, um die Vertraulichkeit, Integrität und Verfügbarkeit zu gefährden.
WID-SEC-W-2024-1307Red Hat OpenShift Service Mesh Containers: Mehrere SchwachstellenDeutsch2024-06-06csaf · cert_bundDE
Ein Angreifer kann mehrere Schwachstellen in Red Hat OpenShift Service Mesh Containers ausnutzen, um Dateien zu manipulieren, einen 'Denial of Service'-Zustand erzuegen, beliebigen Code auszuführen, vertrauliche Informationen offenzulegen oder weitere nicht spezifizierte Angriffe durchzuführen.

also known as (3)

Other names and identifiers for this entity.

sources

Which sources assert this record, and when.

cnnvd enisa_euvd cert_bund nvd NVD CVE.org MITRE

published 2023-08-16modified 2026-06-17

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+1203 more

references (18)

External citations — patches, advisories, analysis.

scry

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