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CVE-2008-0891

18
FAUCET Score

CVE-2008-0891 describes a double free vulnerability in OpenSSL versions 0.9.8f and 0.9.8g, specifically when TLS server name extensions are enabled. This flaw can be triggered by a remote attacker sending a malformed Client Hello packet, leading to a denial of service (crash) of the affected system. The vulnerability has a CVSS score of 4.3, indicating a medium attack complexity and potential for partial availability impact. There is no evidence of active exploitation, publicly available exploit code, or significant community discussion surrounding this CVE.

Impacted Technologies

VendorProductVersion(s)CPE
0.9.8fCPE matchmatch criteria
cpe:2.3:a:openssl:openssl:0.9.8f:*:*:*:*:*:*:*
0.9.8gCPE matchmatch criteria
cpe:2.3:a:openssl:openssl:0.9.8g:*:*:*:*:*:*:*

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
4.56%
Probability of exploitation in next 30 days
EPSS Percentile
90.6%
Percentile rank of EPSS score among Peer Group
As of 2026-07-26
Model: v2026.06.15
This CVE's current EPSS score of 0.0456 is in the 88th percentile among its peer group of 19,955 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

Vendor Advisories (1)

redhatCVE-2008-0891Moderate

openssl: Server Name extension crash

May 28, 2008

References

cert.fi / haavoittuvuudet/2008/advisory-openssl.html
secunia.com / advisories/30405
Vendor Advisory
secunia.com / advisories/30460
secunia.com / advisories/30825
secunia.com / advisories/30852
secunia.com / advisories/30868
secunia.com / advisories/31228
secunia.com / advisories/31288
security.gentoo.org / glsa/glsa-200806-08.xml
exchange.xforce.ibmcloud.com / vulnerabilities/42666
slackware.com / security/viewer.php
sourceforge.net / project/shownotes.php
support.nortel.com / go/main.jsp
redhat.com / archives/fedora-package-announce/2008-May/msg01029.html
kb.cert.org / vuls/id/661475
US Government Resource
mandriva.com / security/advisories
openssl.org / news/secadv_20080528.txt
securityfocus.com / bid/29405
Patch
securitytracker.com / id
ubuntu.com / usn/usn-620-1
vupen.com / english/advisories/2008/1680
vupen.com / english/advisories/2008/1937/references