CVE-2016-6308
statem/statem_dtls.c in the DTLS implementation in OpenSSL 1.1.0 before 1.1.0a allocates memory before checking for an excessive length, which might allow remote attackers to cause a denial of service (memory consumption) via crafted DTLS messages.
Does this matter?
EPSS puts the probability of exploitation in the next 30 days at 12.2%, higher than 96% of all known CVEs. Patch or mitigate before the next change window.
Description
statem/statem_dtls.c in the DTLS implementation in OpenSSL 1.1.0 before 1.1.0a allocates memory before checking for an excessive length, which might allow remote attackers to cause a denial of service (memory consumption) via crafted DTLS messages.
- CVSS 3.0
- 5.9 MEDIUMCVSS:3.0/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:N/A:H
- EPSS
- 12.20% probability · 96th percentile
- Public exploits
- None in Exploit-DB
- CISA KEV
- Not listed
- Weakness
- CWE-399
- Affected
- openssl/openssl
- Source
- secalert@redhat.com
EPSS moved from 12.2% on 22 October 2026 to 12.2% on 4 November 2026. The dashed line is the ten per cent mark our analysts treat as “patch before the next change window”.
References
- http://kb.juniper.net/InfoCenter/index?page=content&id=JSA10759
- http://www-01.ibm.com/support/docview.wss?uid=swg21995039
- http://www.oracle.com/technetwork/security-advisory/cpuapr2018-3678067.html
- http://www.oracle.com/technetwork/security-advisory/cpujan2018-3236628.html
- http://www.oracle.com/technetwork/security-advisory/cpujul2017-3236622.html
- http://www.oracle.com/technetwork/security-advisory/cpuoct2016-2881722.html
- http://www.oracle.com/technetwork/security-advisory/cpuoct2017-3236626.html
- http://www.securityfocus.com/bid/93151
- http://www.securitytracker.com/id/1036885
- https://bto.bluecoat.com/security-advisory/sa132
- https://cert-portal.siemens.com/productcert/pdf/ssa-412672.pdf
- https://git.openssl.org/?p=openssl.git%3Ba=commit%3Bh=df6b5e29ffea2d5a3e08de92fb765fdb21c7a21e
- https://www.openssl.org/news/secadv/20160922.txtVendor Advisory
- https://www.tenable.com/security/tns-2016-16
- https://www.tenable.com/security/tns-2016-20
- https://www.tenable.com/security/tns-2016-21
- http://kb.juniper.net/InfoCenter/index?page=content&id=JSA10759
- http://www-01.ibm.com/support/docview.wss?uid=swg21995039
- http://www.oracle.com/technetwork/security-advisory/cpuapr2018-3678067.html
- http://www.oracle.com/technetwork/security-advisory/cpujan2018-3236628.html
- http://www.oracle.com/technetwork/security-advisory/cpujul2017-3236622.html
- http://www.oracle.com/technetwork/security-advisory/cpuoct2016-2881722.html
- http://www.oracle.com/technetwork/security-advisory/cpuoct2017-3236626.html
- http://www.securityfocus.com/bid/93151
- http://www.securitytracker.com/id/1036885
- https://bto.bluecoat.com/security-advisory/sa132
- https://cert-portal.siemens.com/productcert/pdf/ssa-412672.pdf
- https://git.openssl.org/?p=openssl.git%3Ba=commit%3Bh=df6b5e29ffea2d5a3e08de92fb765fdb21c7a21e
- https://www.openssl.org/news/secadv/20160922.txtVendor Advisory
- https://www.tenable.com/security/tns-2016-16
Source: NVD record, EPSS from FIRST.org, KEV from CISA, exploits from Exploit-DB. Refreshed daily. Download this record as JSON.