CVE-2013-6450
MEDIUMEPSS 96th pctlDescription
The DTLS retransmission implementation in OpenSSL 1.0.0 before 1.0.0l and 1.0.1 before 1.0.1f does not properly maintain data structures for digest and encryption contexts, which might allow man-in-the-middle attackers to trigger the use of a different context and cause a denial of service (application crash) by interfering with packet delivery, related to ssl/d1_both.c and ssl/t1_enc.c.
How to fix
TridentStack Control can deploy fixes like this automatically across your Windows, macOS, and Linux fleet. See how it works
Remediation is compiled from vendor and distribution security advisories. Always confirm against the linked source for your exact version and platform.
CVSS v2 Vector
No CVSS vector data available.
Exploit Intelligence
Very high risk: more likely to be exploited than 96% of all known CVEs.
References
- git.openssl.org
- lists.fedoraproject.org
- lists.fedoraproject.org
- lists.opensuse.org
- lists.opensuse.org
- rhn.redhat.com
- seclists.org
- security.gentoo.org
- www-01.ibm.com
- www-01.ibm.com
- debian.org
- openssl.org
- oracle.com
- oracle.com
- securityfocus.com
- securityfocus.com
- securitytracker.com
- securitytracker.com
- ubuntu.com
- vmware.com
- puppet.com
- security-tracker.debian.org
Related Vulnerabilities
Other CWE-310 (Cryptographic Issues) vulnerabilities, ordered by exploit likelihood. View all
| CVE | Severity | CVSS | EPSS | Exploited | Fix |
|---|---|---|---|---|---|
| CVE-2014-3566 | Low | 3.4 | 100% | - | Fix |
| CVE-2015-4000 | Low | 3.7 | 100% | - | Fix |
| CVE-2015-0204 | Medium | 4.3 | 99% | - | Fix |
| CVE-2016-2107 | Medium | 5.9 | 89% | - | Fix |
| CVE-2016-0800 | Medium | 5.9 | 82% | - | Fix |
| CVE-2014-8684 | Critical | 9.8 | 72% | - | - |
Common questions
How do I fix CVE-2013-6450?
Upgrade openssl on debian 11 to 1.0.1e-5 or later.
Is CVE-2013-6450 being actively exploited?
Not that we know of. CVE-2013-6450 is not in the CISA Known Exploited Vulnerabilities catalog. Its EPSS score of 14.5% is the estimated probability that it will be exploited in the next 30 days. That is higher than 96% of all scored CVEs.
How severe is CVE-2013-6450?
CVE-2013-6450 has a CVSS v2 base score of 5.8, rated medium. CVSS rates the technical impact if the vulnerability is exploited, not how likely that is, so weigh it alongside the exploit-prediction score when you decide what to patch first.
What does CVE-2013-6450 affect?
Published advisories record a fix for openssl (Debian). Only products with a sourced advisory are listed, so treat this as what we can cite rather than a complete inventory.
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This product uses NVD data but is not endorsed or certified by the NVD. EPSS scores courtesy of FIRST.org (https://www.first.org/epss). Source: CISA KEV Catalog. Data as of 2026-04-29.