Medium 5.0Published Mar 19, 2015

CVE-2015-0207The dtls1_listen function in d1_lib.c in OpenSSL 1.0.2 before 1.0.2a does not properly isolate the state information of independent data streams, which allows remote attackers to cause a denial of se…

Updated under an hour ago (Nov 2, 2026, 12:10 AM ET)

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No exploitation reported and no EPSS estimate yet.

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The dtls1_listen function in d1_lib.c in OpenSSL 1.0.2 before 1.0.2a does not properly isolate the state information of independent data streams, which allows remote attackers to cause a denial of service (application crash) via crafted DTLS traffic, as demonstrated by DTLS 1.0 traffic to a DTLS 1.2 server.

CVSS: 5.0 MEDIUM (v2.0, NVD)AV:N/AC:L/Au:N/C:N/I:N/A:P
Weakness (CWE): Not given
Known exploited: Not in CISA's KEV catalog
EPSS (exploitation in the next 30 days): Not loaded for this CVE
Assigned by: Not given
NVD analysis: Modified
Record last updated: Jun 16, 2026
First seen by InfoSec Signals: Nov 1, 2026

Affected products

Affected products

openssl openssl openssl:openssl	1.0.2; 1.0.2; 1.0.2; 1.0.2	NVD

References

References

http://marc.info/?l=bugtraq&m=143748090628601&w=2	mailing-list, third-party-advisory
http://marc.info/?l=bugtraq&m=144050155601375&w=2	mailing-list, third-party-advisory
http://marc.info/?l=bugtraq&m=144050297101809&w=2	mailing-list, third-party-advisory
http://www.oracle.com/technetwork/security-advisory/cpuoct2017-3236626.html	patch, third-party-advisory
http://www.oracle.com/technetwork/topics/security/bulletinapr2015-2511959.html	third-party-advisory
http://www.oracle.com/technetwork/topics/security/cpujan2016-2367955.html	third-party-advisory
http://www.oracle.com/technetwork/topics/security/cpujul2015-2367936.html	third-party-advisory
http://www.oracle.com/technetwork/topics/security/cpuoct2015-2367953.html	third-party-advisory
http://www.securityfocus.com/bid/73229	third-party-advisory, vdb-entry
http://www.securitytracker.com/id/1031929	third-party-advisory, vdb-entry
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The CVE record on cve.org NVD's entry

The CVE record is authoritative. Products marked “from the name” were identified from the CNA's free-text names, not a CPE, and are matched less certainly. This product uses the NVD API but is not endorsed or certified by the NVD.