Is CVE-2013-6449 in the CISA KEV catalog?

No. CVE-2013-6449 is not currently on the CISA Known Exploited Vulnerabilities list.

What is the CVSS severity of CVE-2013-6449?

CVE-2013-6449 has a CVSS v2 base score of 4.3 (MEDIUM).

What is the EPSS score for CVE-2013-6449?

CVE-2013-6449 has an EPSS score of 21.17% (97th percentile), estimating the probability of exploitation in the next 30 days.

How do I fix CVE-2013-6449?

Upgrade openssl on debian 11 to 1.0.1e-5 or later.

CVE & CISA-KEV Catalog

CVE-2013-6449

MEDIUMEPSS 97th pctl

4.3

CVSS v2

NVD

Description

The ssl_get_algorithm2 function in ssl/s3_lib.c in OpenSSL before 1.0.2 obtains a certain version number from an incorrect data structure, which allows remote attackers to cause a denial of service (daemon crash) via crafted traffic from a TLS 1.2 client.

CWE-310Cryptographic Issues

How to fix

Remediation Available

opensslDebian

Fixed in:1.0.1e-5CVE-2013-6449

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

21.17%probability of exploitation in 30 days

97thpercentile

Very high risk: more likely to be exploited than 97% of all known CVEs.

References

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%	-	-

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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.