SOC status:Duty analyst on shift

UK Cyber Defence
VulnerabilityModified

CVE-2016-2107

The AES-NI implementation in OpenSSL before 1.0.1t and 1.0.2 before 1.0.2h does not consider memory allocation during a certain padding check, which allows remote attackers to obtain sensitive cleartext information via a padding-oracle attack against an…

EXPLOIT ✓MEDIUM 5.9EPSS 89.1%

Does this matter?

EPSS puts the probability of exploitation in the next 30 days at 89.1%, higher than 100% of all known CVEs. Patch or mitigate before the next change window.

Description

The AES-NI implementation in OpenSSL before 1.0.1t and 1.0.2 before 1.0.2h does not consider memory allocation during a certain padding check, which allows remote attackers to obtain sensitive cleartext information via a padding-oracle attack against an AES CBC session. NOTE: this vulnerability exists because of an incorrect fix for CVE-2013-0169.

CVSS 3.1
5.9 MEDIUMCVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:N/A:N
EPSS
89.06% probability · 100th percentile
Public exploits
1 in Exploit-DB · verified · first 4 May 2016
CISA KEV
Not listed
Weakness
CWE-200, CWE-310
Affected
redhat/enterprise linux desktop · redhat/enterprise linux hpc node · redhat/enterprise linux hpc node eus · redhat/enterprise linux server · redhat/enterprise linux server aus · redhat/enterprise linux server eus · redhat/enterprise linux workstation · opensuse/leap · opensuse/opensuse · openssl/openssl · google/android · hp/helion openstack · nodejs/node.js · debian/debian linux · canonical/ubuntu linux
Source
secalert@redhat.com
EPSS trend
0%45%90%26 October 2026: 89.06%26 October 202626 October 2026

EPSS 89.1% since 26 October 2026; no change recorded yet. The dashed line is the ten per cent mark our analysts treat as “patch before the next change window”. Points are recorded when the score first appears and whenever it moves by a percentage point or more.

Public exploits (1)

Entries in Exploit-DB that cite this CVE. Links go to the Exploit-DB page and to the file in the public repository; nothing is hosted here. A verified tick means the Exploit-DB team confirmed the exploit works against the stated version.

EDB-IDTitleTypePublishedVerified
EDB-39768source ↗OpenSSL - Padding Oracle in AES-NI CBC MAC Checkmultiple · Juraj Somorovskydos4 May 2016yes

References

Source: NVD record, EPSS from FIRST.org, KEV from CISA, exploits from Exploit-DB. Refreshed daily. Download this record as JSON.