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CVE-2012-2135

23
FAUCET Score

CVE-2012-2135 describes a vulnerability in the UTF-16 decoder of Python versions 3.1 through 3.3, impacting various Canonical and Debian Linux distributions and Python installations. The flaw stems from the decoder's failure to update a variable after error handling, potentially allowing remote attackers to access sensitive process memory or trigger a denial of service through memory corruption and application crashes. With a CVSS score of 6.4 (medium severity), it is remotely exploitable with low attack complexity, leading to partial confidentiality and availability impacts. There is no evidence of active exploitation, public exploit code (Metasploit, Nuclei, ExploitDB), or significant community discussion or media coverage surrounding this vulnerability.

Impacted Technologies

VendorProductVersion(s)CPE
>= 2.7.0, < 2.7.4CPE matchmatch criteria
cpe:2.3:a:python:python:*:*:*:*:*:*:*:*
>= 3.2.0, < 3.2.4CPE matchmatch criteria
cpe:2.3:a:python:python:*:*:*:*:*:*:*:*
>= 3.3.0, < 3.3.3CPE matchmatch criteria
cpe:2.3:a:python:python:*:*:*:*:*:*:*:*
10.04CPE matchmatch criteria
cpe:2.3:o:canonical:ubuntu_linux:10.04:*:*:*:-:*:*:*
11.04CPE matchmatch criteria
cpe:2.3:o:canonical:ubuntu_linux:11.04:*:*:*:*:*:*:*

CVSS Data

CVSS version used by this source: 2.0

6.4MEDIUM

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

Confidentiality Impact
PARTIAL
Integrity Impact
NONE
Availability Impact
PARTIAL
Access Vector
NETWORK
Access Complexity
LOW
Authentication
NONE
Exploitability Score
10.0
Impact Score
4.9
CvssVersion
2.0

Exploit Intelligence

EPSS Score
4.55%
Probability of exploitation in next 30 days
EPSS Percentile
90.6%
Percentile rank of EPSS score among Peer Group
As of 2026-07-27
Model: v2026.06.15
This CVE's current EPSS score of 0.0455 is in the 87th percentile among its peer group of 23,705 CVEs.

Social Chatter

The average CVE in this peer group has 0.0 Twitter, 0.0 Reddit, 0.1 Bluesky, 0.0 Mastodon, and 0.4 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

Remediation records are not available for this CVE.

References

bugs.debian.org / cgi-bin/bugreport.cgi
Third Party Advisory
bugs.python.org / issue14579
Vendor Advisory
secunia.com / advisories/51087
Third Party Advisory
secunia.com / advisories/51089
Third Party Advisory
openwall.com / lists/oss-security/2012/04/25/2
Mailing ListThird Party Advisory
openwall.com / lists/oss-security/2012/04/25/4
Mailing ListThird Party Advisory
ubuntu.com / usn/USN-1615-1
Third Party Advisory
ubuntu.com / usn/USN-1616-1
Third Party Advisory