CVE-2013-2223: GNU ZRTPCPP before 3.2.0 allows remote attackers to obtain sensitive information (uninitialized heap memory) o

Q: How do I fix CVE-2013-2223?

zrtpcpp: upgrade to newer than 3.2.1. Exact commands for each OS are on this page.

Q: Is CVE-2013-2223 being exploited?

CVE-2013-2223 is not on the CISA Known Exploited Vulnerabilities list at the time of the last update. Check again, as this can change.

Q: What does CVE-2013-2223 affect?

CVE-2013-2223 affects zrtpcpp. Severity is medium (CVSS 5.8). GNU ZRTPCPP before 3.2.0 allows remote attackers to obtain sensitive information (uninitialized heap memory) or cause a denial of service (out-of-bounds read) via a crafted packet, as demonstrated by a truncated Ping packet that is not prop

Q: How urgent is CVE-2013-2223?

Priority 47/100. Public exploit reference

This month

MEDIUM 5.8UPGRADE

CVE-2013-2223 is a medium-severity flaw (CVSS 5.8) affecting zrtpcpp. Below: why it ranks where it does, which versions are affected, what to do, and the exact commands.

GNU ZRTPCPP before 3.2.0 allows remote attackers to obtain sensitive information (uninitialized heap memory) or cause a denial of service (out-of-bounds read) via a crafted packet, as demonstrated by a truncated Ping packet that is not properly handled by the getEpHash function.

Why this priority

Public exploit reference

A fixed release or distro patch exists.

Risk facts

CVSS score	5.8 (Medium)
EPSS exploit chance	3.2% (top 12%)
CISA exploited list	No
Weakness	CWE-119
Published	2013-10-04
Last modified	2026-06-16

Publisher (CNA): Red Hat, Inc. · Vendor: wernerd

Last updated 2026-06-16 · Sources: CVE Program, NVD, CISA KEV, EPSS and vendor advisories · How we score

Am I affected?

Timeline

2013-10-04 17:55 UTCPublished CVE record published
2026-06-16 23:52 UTCUpdated Record last modified

wernerd zrtpcpp UPGRADE

Affected: <= 3.2.1 · 2.1.2 · 2.2.0 · 2.3.0 · 3.0.0 alpha · 3.1.0 · 3.2.0

Fixed in: newer than 3.2.1

Safe to downgrade to: no unaffected older release

1. Check installed version

apt-cache policy zrtpcpp || rpm -q zrtpcpp || zrtpcpp --version

2. UPGRADE to newer than 3.2.1 (Debian / Ubuntu)

sudo apt update && sudo apt install --only-upgrade zrtpcpp

2. UPGRADE (RHEL / Amazon Linux / Fedora)

sudo dnf upgrade zrtpcpp

Note

Distros often backport fixes without changing the version number. Confirm with the distro advisory or changelog.

Verify at the official source NVD · CVE Program · Report a problem with this page
Scores and fixes here are computed automatically from those and other public sources. Confirm with the vendor advisory before changing production systems.

Quick answers

How do I fix CVE-2013-2223?

zrtpcpp: upgrade to newer than 3.2.1. Exact commands for each OS are on this page.

Is CVE-2013-2223 being exploited?

CVE-2013-2223 is not on the CISA Known Exploited Vulnerabilities list at the time of the last update. Check again, as this can change.

What does CVE-2013-2223 affect?

CVE-2013-2223 affects zrtpcpp. Severity is medium (CVSS 5.8). GNU ZRTPCPP before 3.2.0 allows remote attackers to obtain sensitive information (uninitialized heap memory) or cause a denial of service (out-of-bounds read) via a crafted packet, as demonstrated by a truncated Ping packet that is not prop

How urgent is CVE-2013-2223?

Priority 47/100. Public exploit reference

Related CVEs

CVE-2013-2222 MEDIUM 6.8 UPGRADE Multiple stack-based buffer overflows in GNU ZRTPCPP before 3.2.0 allow remote attackers to cause a denial of
CVE-2013-2221 HIGH 7.5 UPGRADE Heap-based buffer overflow in the ZRtp::storeMsgTemp function in GNU ZRTPCPP before 3.2.0 allows remote attack

References

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