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CVE-2013-2221

24
FAUCET Score

CVE-2013-2221 describes a heap-based buffer overflow in the ZRtp::storeMsgTemp function of GNU ZRTPCPP before version 3.2.0, impacting products like wernerd zrtpcpp. This vulnerability, with a CVSS score of 7.5, allows remote attackers to cause a denial of service (crash) and potentially execute arbitrary code by sending a large packet. While no active exploitation, public exploit code (Metasploit, Nuclei, ExploitDB), or significant community discussion has been observed, its high severity and remote attack vector warrant attention.

Impacted Technologies

VendorProductVersion(s)CPE
<= 3.2.1CPE matchmatch criteria
cpe:2.3:a:wernerd:zrtpcpp:*:*:*:*:*:*:*:*
2.1.2CPE matchmatch criteria
cpe:2.3:a:wernerd:zrtpcpp:2.1.2:*:*:*:*:*:*:*
2.2.0CPE matchmatch criteria
cpe:2.3:a:wernerd:zrtpcpp:2.2.0:*:*:*:*:*:*:*
2.3.0CPE matchmatch criteria
cpe:2.3:a:wernerd:zrtpcpp:2.3.0:*:*:*:*:*:*:*
3.0.0CPE matchmatch criteria
cpe:2.3:a:wernerd:zrtpcpp:3.0.0:alpha:*:*:*:*:*:*

CVSS Data

CVSS version used by this source: 2.0

7.5HIGH

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

Confidentiality Impact
PARTIAL
Integrity Impact
PARTIAL
Availability Impact
PARTIAL
Access Vector
NETWORK
Access Complexity
LOW
Authentication
NONE
Exploitability Score
10.0
Impact Score
6.4
CvssVersion
2.0

Exploit Intelligence

EPSS Score
4.32%
Probability of exploitation in next 30 days
EPSS Percentile
90.1%
Percentile rank of EPSS score among Peer Group
As of 2026-07-25
Model: v2026.06.15
This CVE's current EPSS score of 0.0432 is in the 83rd percentile among its peer group of 51,485 CVEs.

Social Chatter

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

Media Mentions

No media coverage found for this CVE.

The average CVE in this peer group has 0.1 InfoSec Media, 0.0 Vendor Blog, and 0.0 Security Researcher mentions.

Remediation

Patch Available

Vendor Patches (1)

github_advisorypatch availablevia nvd_reference
View patch

References

blog.azimuthsecurity.com / 2013/06/attacking-crypto-phones-weaknesses-in.html
Exploit
lists.opensuse.org / opensuse-updates/2013-10/msg00052.html
lists.opensuse.org / opensuse-updates/2013-10/msg00053.html
seclists.org / oss-sec/2013/q2/638
secunia.com / advisories/53818
Vendor Advisory
secunia.com / advisories/54998
Vendor Advisory
security.gentoo.org / glsa/glsa-201309-13.xml
github.com / wernerd/ZRTPCPP/commit/4654f330317c9948bb61d138eb24d49690ca4637
Patch