CVE-2009-0845

The spnego_gss_accept_sec_context function in lib/gssapi/spnego/spnego_mech.c in MIT Kerberos 5 ...

5.0 MediumFix available

The spnego_gss_accept_sec_context function in lib/gssapi/spnego/spnego_mech.c in MIT Kerberos 5 (aka krb5) 1.5 through 1.6.3, when SPNEGO is used, allows remote attackers to cause a denial of service (NULL pointer dereference and daemon crash) via invalid ContextFlags data in the reqFlags field in a negTokenInit token.

Exploit likelihood

5.63%Up 1.3 points since Feb 4, 2022

What each source reports

NVD Score used 5.0

Record: CVE-2009-0845
CVSS 2.0: 5.0 MediumAV:N/AC:L/Au:N/C:N/I:N/A:P
Weakness: CWE-20
Updated: 2026-11-02

CVE List No score

Record: CVE-2009-0845
Updated: 2026-11-02

EUVDEUVD-2009-0842 No score

Record: EUVD-2009-0842
Updated: 2026-11-03

GitHub AdvisoriesGHSA-74gr-5fw9-9jj5 No score

The spnego_gss_accept_sec_context function in lib/gssapi/spnego/spnego_mech.c in MIT Kerberos 5 ...

Record: GHSA-74gr-5fw9-9jj5
Weakness: CWE-20
Updated: 2026-11-02

OSV No score

Record: CVE-2009-0845
Updated: 2026-11-02

OSVDEBIAN-CVE-2009-0845 No score

Record: DEBIAN-CVE-2009-0845
Updated: 2026-11-02

OSVopenSUSE-SU-2024:10004-1 No score

krb5-1.15-1.1 on GA media

These are all security issues fixed in the krb5-1.15-1.1 package on the GA media of openSUSE Tumbleweed.

Record: openSUSE-SU-2024:10004-1
Updated: 2026-11-02

Affected products

Affected packages

Affected packages
Package	Affected	Fixed
`krb5` Debian:12	before 1.6.dfsg.4~beta1-13	1.6.dfsg.4~beta1-13
`krb5` Debian:13	before 1.6.dfsg.4~beta1-13	1.6.dfsg.4~beta1-13
`krb5` Debian:14	before 1.6.dfsg.4~beta1-13	1.6.dfsg.4~beta1-13
`krb5` Debian:4.0 From an advisory covering 4 CVEs	before 1.4.4-7etch7, plus listed versions 1.4.4-7etch11.4.4-7etch21.4.4-7etch31.4.4-7etch41.4.4-7etch51.4.4-7etch6	1.4.4-7etch7
`krb5` Debian:5.0 From an advisory covering 4 CVEs	before 1.6.dfsg.4~beta1-5lenny1, plus listed versions 1.6.dfsg.4~beta1-5	1.6.dfsg.4~beta1-5lenny1
`krb5` Red Hat:enterprise_linux:5::client_workstation From an advisory covering 3 CVEs	before 0:1.6.1-31.el5_3.3	0:1.6.1-31.el5_3.3
`krb5-debuginfo` Red Hat:enterprise_linux:5::client_workstation From an advisory covering 3 CVEs	before 0:1.6.1-31.el5_3.3	0:1.6.1-31.el5_3.3
`krb5-devel` Red Hat:enterprise_linux:5::client_workstation From an advisory covering 3 CVEs	before 0:1.6.1-31.el5_3.3	0:1.6.1-31.el5_3.3
`krb5-server` Red Hat:enterprise_linux:5::client_workstation From an advisory covering 3 CVEs	before 0:1.6.1-31.el5_3.3	0:1.6.1-31.el5_3.3
`krb5` Red Hat:enterprise_linux:5::client From an advisory covering 3 CVEs	before 0:1.6.1-31.el5_3.3	0:1.6.1-31.el5_3.3

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Affected packages
Package	Affected	Fixed
`krb5-debuginfo` Red Hat:enterprise_linux:5::client From an advisory covering 3 CVEs	before 0:1.6.1-31.el5_3.3	0:1.6.1-31.el5_3.3
`krb5-libs` Red Hat:enterprise_linux:5::client From an advisory covering 3 CVEs	before 0:1.6.1-31.el5_3.3	0:1.6.1-31.el5_3.3
`krb5-workstation` Red Hat:enterprise_linux:5::client From an advisory covering 3 CVEs	before 0:1.6.1-31.el5_3.3	0:1.6.1-31.el5_3.3
`krb5` Red Hat:enterprise_linux:5::server From an advisory covering 3 CVEs	before 0:1.6.1-31.el5_3.3	0:1.6.1-31.el5_3.3
`krb5-debuginfo` Red Hat:enterprise_linux:5::server From an advisory covering 3 CVEs	before 0:1.6.1-31.el5_3.3	0:1.6.1-31.el5_3.3
`krb5-devel` Red Hat:enterprise_linux:5::server From an advisory covering 3 CVEs	before 0:1.6.1-31.el5_3.3	0:1.6.1-31.el5_3.3
`krb5-libs` Red Hat:enterprise_linux:5::server From an advisory covering 3 CVEs	before 0:1.6.1-31.el5_3.3	0:1.6.1-31.el5_3.3
`krb5-server` Red Hat:enterprise_linux:5::server From an advisory covering 3 CVEs	before 0:1.6.1-31.el5_3.3	0:1.6.1-31.el5_3.3
`krb5-workstation` Red Hat:enterprise_linux:5::server From an advisory covering 3 CVEs	before 0:1.6.1-31.el5_3.3	0:1.6.1-31.el5_3.3
`krb5` openSUSE:Tumbleweed From an advisory covering 54 CVEs	before 1.15-1.1	1.15-1.1

History

History
Recorded	Changed	Sources
Nov 6, 2026	affected, facts
Nov 3, 2026	aliases	EUVD
Nov 2, 2026	first indexed	CVE List, GitHub Advisories, NVD, OSV

Dates are when Every CVE recorded each change. Upstream dates may differ.

In short

CVE-2009-0845 is a medium vulnerability (CVSS 5.0) in Mit Kerberos, published March 27, 2009. No source lists public exploit code. EPSS puts the chance of exploitation in the next 30 days at 5.63%, the 93rd percentile. Fixed in krb5 1.6.dfsg.4~beta1-13.

References

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