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CVE-2010-0433

20
FAUCET Score

CVE-2010-0433 is a denial-of-service vulnerability affecting OpenSSL versions prior to 0.9.8n when Kerberos is enabled. It allows remote attackers to crash a daemon (e.g., Dovecot, stunnel) via SSL cipher negotiation due to a NULL pointer dereference. The attack has a network vector and medium complexity, resulting in a partial availability impact. There is no evidence of active exploitation, public exploit code, or significant community discussion.

Impacted Technologies

VendorProductVersion(s)CPE
<= 0.9.8mCPE matchmatch criteria
cpe:2.3:a:openssl:openssl:*:*:*:*:*:*:*:*
0.9.8CPE matchmatch criteria
cpe:2.3:a:openssl:openssl:0.9.8:*:*:*:*:*:*:*
0.9.8aCPE matchmatch criteria
cpe:2.3:a:openssl:openssl:0.9.8a:*:*:*:*:*:*:*
0.9.8bCPE matchmatch criteria
cpe:2.3:a:openssl:openssl:0.9.8b:*:*:*:*:*:*:*
0.9.8cCPE matchmatch criteria
cpe:2.3:a:openssl:openssl:0.9.8c:*:*:*:*:*:*:*

CVSS Data

CVSS version used by this source: 2.0

4.3MEDIUM

AV:N/AC:M/Au:N/C:N/I:N/A:P

Confidentiality Impact
NONE
Integrity Impact
NONE
Availability Impact
PARTIAL
Access Vector
NETWORK
Access Complexity
MEDIUM
Authentication
NONE
Exploitability Score
8.6
Impact Score
2.9
CvssVersion
2.0

Exploit Intelligence

EPSS Score
7.86%
Probability of exploitation in next 30 days
EPSS Percentile
94.1%
Percentile rank of EPSS score among Peer Group
As of 2026-07-28
Model: v2026.06.15
This CVE's current EPSS score of 0.0786 is in the 93rd percentile among its peer group of 19,958 CVEs.

Social Chatter

The average CVE in this peer group has 0.0 Twitter, 0.0 Reddit, 0.0 Bluesky, 0.0 Mastodon, and 0.2 GitHub mentions.

Media Mentions

No media coverage found for this CVE.

The average CVE in this peer group has 0.0 InfoSec Media, 0.0 Vendor Blog, and 0.0 Security Researcher mentions.

Remediation

Patch Available

Vendor Patches (1)

redhatpatch availablevia redhat_api
Product: Red Hat Enterprise Linux 5Fixed in: openssl-0:0.9.8e-12.el5_4.6
View patch

Vendor Advisories (1)

redhatCVE-2010-0433Moderate

openssl: crash caused by a missing krb5_sname_to_principal() return value check

Jan 19, 2010

References

aix.software.ibm.com / aix/efixes/security/openssl_advisory.asc
cvs.openssl.org / chngview
groups.google.com / group/mailing.openssl.users/browse_thread/thread/c3e1ab0034ca4b4c/66aa896c3a78b2f7
lists.fedoraproject.org / pipermail/package-announce/2010-April/038587.html
lists.fedoraproject.org / pipermail/package-announce/2010-April/039561.html
marc.info
marc.info
bugzilla.redhat.com / show_bug.cgi
bugzilla.redhat.com / show_bug.cgi
secunia.com / advisories/39461
secunia.com / advisories/39932
secunia.com / advisories/42724
secunia.com / advisories/42733
secunia.com / advisories/43311
kb.bluecoat.com / index
lists.balabit.com / pipermail/syslog-ng-announce/2011-January/000101.html
lists.balabit.com / pipermail/syslog-ng-announce/2011-January/000102.html
oval.cisecurity.org / repository/search/definition/oval%3Aorg.mitre.oval%3Adef%3A12260
oval.cisecurity.org / repository/search/definition/oval%3Aorg.mitre.oval%3Adef%3A6718
oval.cisecurity.org / repository/search/definition/oval%3Aorg.mitre.oval%3Adef%3A9856
mail-archive.com / dovecot%40dovecot.org/msg26224.html
mandriva.com / security/advisories
openssl.org / news/changelog.html
openwall.com / lists/oss-security/2010/03/03/5
securityfocus.com / archive/1/516397/100/0/threaded
vmware.com / security/advisories/VMSA-2011-0003.html
vmware.com / support/vsphere4/doc/vsp_vc41_u1_rel_notes.html
vupen.com / english/advisories/2010/0839
vupen.com / english/advisories/2010/0916
vupen.com / english/advisories/2010/0933
vupen.com / english/advisories/2010/1216