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CVE-2012-6702

22
FAUCET Score

CVE-2012-6702 describes a cryptographic weakness in Expat, affecting products from Canonical, Debian, and Google. When Expat is used in a parser without proper hash salt initialization, it allows attackers to more easily bypass cryptographic protections by manipulating the srand function. This vulnerability has a CVSS score of 5.9 (Medium), indicating a network-based attack with high impact on integrity but requiring high attack complexity. There is no evidence of active exploitation, public exploit code, or significant community discussion surrounding this CVE.

Impacted Technologies

VendorProductVersion(s)CPE
< 2.2.0CPE matchmatch criteria
cpe:2.3:a:libexpat_project:libexpat:*:*:*:*:*:*:*:*
12.04CPE matchmatch criteria
cpe:2.3:o:canonical:ubuntu_linux:12.04:*:*:*:lts:*:*:*
14.04CPE matchmatch criteria
cpe:2.3:o:canonical:ubuntu_linux:14.04:*:*:*:lts:*:*:*
15.10CPE matchmatch criteria
cpe:2.3:o:canonical:ubuntu_linux:15.10:*:*:*:*:*:*:*
16.04CPE matchmatch criteria
cpe:2.3:o:canonical:ubuntu_linux:16.04:*:*:*:lts:*:*:*

CVSS Data

CVSS version used by this source: 3.0

5.9MEDIUM

CVSS:3.0/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:H/A:N

Attack Vector
NETWORK
Attack Complexity
HIGH
Privileges Required
NONE
User Interaction
NONE
Scope
UNCHANGED
Confidentiality Impact
NONE
Integrity Impact
HIGH
Availability Impact
NONE
Exploitability Score
2.2
Impact Score
3.6
CvssVersion
3.0

Exploit Intelligence

EPSS Score
2.37%
Probability of exploitation in next 30 days
EPSS Percentile
82.1%
Percentile rank of EPSS score among Peer Group
As of 2026-07-27
Model: v2026.06.15
This CVE's current EPSS score of 0.0237 is in the 71st percentile among its peer group of 19,956 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 Patches (8)

redhatvendor investigatingvia redhat_api
Product: Red Hat Directory Server 8Fixed in: expat
redhatend of lifevia redhat_api
Product: Red Hat Enterprise Linux 5Fixed in: expat
redhatend of lifevia redhat_api
Product: Red Hat Enterprise Linux 5Fixed in: xmlrpc-c
redhatend of lifevia redhat_api
Product: Red Hat Enterprise Linux 6Fixed in: expat
redhatend of lifevia redhat_api
Product: Red Hat Enterprise Linux 7Fixed in: expat
redhatend of lifevia redhat_api
Product: Red Hat JBoss Enterprise Application Platform 6Fixed in: expat
redhatend of lifevia redhat_api
Product: Red Hat JBoss Enterprise Web Server 2Fixed in: expat
redhatend of lifevia redhat_api
Product: Red Hat JBoss Enterprise Web Server 3Fixed in: expat

Vendor Advisories (1)

redhatCVE-2012-6702Moderate

expat: Using XML_Parse before rand() results into non-random output

Feb 27, 2015

References

security.gentoo.org / glsa/201701-21
source.android.com / security/bulletin/2016-11-01.html
tenable.com / security/tns-2016-20
debian.org / security/2016/dsa-3597
openwall.com / lists/oss-security/2016/06/03/8
openwall.com / lists/oss-security/2016/06/04/1
securityfocus.com / bid/91483
ubuntu.com / usn/USN-3010-1