CVE-2016-9963
Exim before 4.87.1 might allow remote attackers to obtain the private DKIM signing key via vectors related to log files and bounce messages.
02 Description
Exim before 4.87.1 might allow remote attackers to obtain the private DKIM signing key via vectors related to log files and bounce messages.
03 Exploitation and scoring
- Exploitation
- Not assessed. CISA has not published an exploitation assessment for this record, and it is not in the KEV catalog. That is an absence of assessment, not a finding of no risk.
- SSVC decision
- Not assessed by CISA
- EPSS probability
- 3.09% probability of exploitation activity in the next 30 days.
- EPSS percentile
- Equal to or higher than the score of 87.6% of scored records. A rank, not a probability.
- NVD base score
- 5.9 (CVSS v3.x), scored by the NVD independently of the CNA.
- NVD CVSS vector
- CVSS:3.0/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:N/A:N
- NVD analysis status
- Modified. NVD last modified this record on 2026-06-17.
- Red Hat severity
- Moderate. Red Hat's rating for its own products, not a CVSS rating.
Exploit-prediction scores from FIRST. Independent scoring and analysis status from the NVD. Vendor severity from Red Hat. Exploitation assessment and catalog membership from CISA.
04 Metadata
- Published
- 2017-02-01 15:00Z9 YR AGO
- Last updated
- 2024-08-06 03:07Z2 YR AGO
- Reserved
- 2016-12-16
- Assigning CNA
- mitre
- Record state
- PUBLISHED
- Severity
- Not rated by the issuing CNA
- CNA CVSS vector
- Not published by the issuing CNA
- Weaknesses
- Data version
- 5.1
- Document digest
- 785fef5f7570c901a211d107671c6440a253956a5127b6bccf5daacc8059a152
05 Affected products
06 References
- www.debian.orgDSA-3747http://www.debian.org/security/2016/dsa-3747
- www.exim.orghttp://www.exim.org/static/doc/CVE-2016-9963.txt
- www.ubuntu.comUSN-3164-1http://www.ubuntu.com/usn/USN-3164-1
- bugs.exim.orghttps://bugs.exim.org/show_bug.cgi?id=1996
- www.securitytracker.com1037484http://www.securitytracker.com/id/1037484
- www.securityfocus.com94947http://www.securityfocus.com/bid/94947
07 Fixed in
Arch Linux
- exim Fixed in 4.88-1
Source: Arch Linux Security Tracker, the Arch Linux security team. Reformatted by exploit.cc.
Debian 12
- exim4 Fixed in 4.88~RC6-2
Source: Debian Security Tracker, the Debian security team. Received through OSV.dev. Reformatted by exploit.cc.
Debian 13
- exim4 Fixed in 4.88~RC6-2
Source: Debian Security Tracker, the Debian security team. Received through OSV.dev. Reformatted by exploit.cc.
Debian 14
- exim4 Fixed in 4.88~RC6-2
Source: Debian Security Tracker, the Debian security team. Received through OSV.dev. Reformatted by exploit.cc.
Ubuntu 14.04 LTS
- exim4 Fixed in 4.82-3ubuntu2.2
Source: Ubuntu, Canonical Ltd. Licensed under CC BY-SA 4.0. Received through OSV.dev. Reformatted by exploit.cc.
Ubuntu 16.04 LTS
- exim4 Fixed in 4.86.2-2ubuntu2.1
Source: Ubuntu, Canonical Ltd. Licensed under CC BY-SA 4.0. Received through OSV.dev. Reformatted by exploit.cc.
A release or ecosystem missing from this list has no record here. It may be unaffected or not covered by the source. Source notices and licences.