CVE-2021-44758

highpriority · track · 30EPSS 0.013 · 71 %ileDEEUUS

grimoire priorityP2 · Scheduled

Exploitable?

—

no known exploitation

Likely / severe?

1.33% (71st) EPSS

CVSS 7.5 · high

Is it mine?

37 products

Check your exposure

Who says so?

3 sources

cnnvd · enisa_euvd · cert_bund

EPSS · scored 2026-10-27

Heimdal before 7.7.1 allows attackers to cause a NULL pointer dereference in a SPNEGO acceptor via a preferred_mech_type of GSS_C_NO_OID and a nonzero initial_response value to send_accept.

cvss

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

7.5

010

base score 0–10 · higher = more severe · hover a vector to decode⚠ sources disagree · medium–high · 6.9–7.5

v3.17.5highCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:Hprimary · NVD / NIST USexploitability 3.9 · impact 3.6

v3.17.5highCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:Hsecondary · ENISA EU

v3.17.5highCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:Hsecondaryexploitability 3.9 · impact 3.6

v3.16.9mediumCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H/E:Usecondary · CVSS-BT (t0sche)

ssvc

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

Exploitation: none · Automatable: yes · Technical Impact: partialcoordinatorcisa_ssvcUS

weaknesses

The CWE weakness classes this flaw belongs to.

CWE-476USprimary

affected products (37)

Products and version ranges known to be affected.

Amazon Linux 2all versionscert_bundDEcpe:/o:amazon:linux_2:-
Debian Linuxall versionscert_bundDEcpe:/o:debian:debian_linux:-
Dell integrated Dell Remote Access Controller 9all versionscert_bundDEcpe:/h:dell:idrac:9
FreeBSD Project FreeBSD OS <12.3 release p9all versionscert_bundDE
FreeBSD Project FreeBSD OS <12.4 RC2 p1all versionscert_bundDE
FreeBSD Project FreeBSD OS <12.4 stableall versionscert_bundDE
FreeBSD Project FreeBSD OS <13.1 release p4all versionscert_bundDE
FreeBSD Project FreeBSD OS <13.1 stableall versionscert_bundDE
Gentoo Linuxall versionscert_bundDEcpe:/o:gentoo:linux:-
HPE HP-UX (CIFS) Client/Server <B.04.18.01.00all versionscert_bundDE
IBM QRadar SIEM <7.4.3 FP9all versionscert_bundDE
IBM QRadar SIEM <7.5.0 UP4 IF01all versionscert_bundDE
IBM Security Guardium 11.4all versionscert_bundDEcpe:/a:ibm:security_guardium:11.4
Open Source CentOSall versionscert_bundDEcpe:/o:centos:centos:-
Open Source Heimdal <7.7.1all versionscert_bundDE
Open Source Heimdal <7.8.0all versionscert_bundDE
Open Source Samba <4.17.4all versionscert_bundDE
Oracle Linuxall versionscert_bundDEcpe:/o:oracle:linux:-
Oracle VM 3all versionscert_bundDEcpe:/a:oracle:vm:3
QNAP NASall versionscert_bundDEcpe:/h:qnap:nas:-

showing 20 of 37

advisories (2)

Vendor and ecosystem advisories describing this.

WID-SEC-W-2022-2057Heimdal: Mehrere SchwachstellenDeutsch2022-11-15csaf · cert_bundDE
Ein Angreifer kann mehrere Schwachstellen in Heimdal, Samba, MIT Kerberos und FreeBSD Project FreeBSD OS ausnutzen, um einen Denial of Service Angriff durchzuführen, und um beliebigen Code auszuführen.
WID-SEC-W-2022-2372genua genugate: Mehrere SchwachstellenDeutsch2022-12-19csaf · cert_bundDE
Ein entfernter, anonymer Angreifer kann einige der mehreren Schwachstellen in Komponenten von Drittanbietern ausnutzen, die von genua genugate verwendet werden, um Informationen offenzulegen und potentiell weitere, unbekannte Auswirkungen zu erzielen.

also known as (2)

Other names and identifiers for this entity.

sources

Which sources assert this record, and when.

cnnvd enisa_euvd cert_bund NVD CVE.org MITRE

published 2022-12-26modified 2026-06-17

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+8782 more

references (18)

External citations — patches, advisories, analysis.

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