CVE-2019-13917
Exim 4.85 through 4.92 (fixed in 4.92.1) allows remote code execution as root in some unusual configurations that use the ${sort } expansion for items that can be controlled by an attacker (e.g., $local_part or $domain).
Does this matter?
High impact if exploited, but EPSS currently rates exploitation as unlikely (8.62%). Schedule it in the normal patch cycle and watch for a rise in EPSS or a public exploit.
Description
Exim 4.85 through 4.92 (fixed in 4.92.1) allows remote code execution as root in some unusual configurations that use the ${sort } expansion for items that can be controlled by an attacker (e.g., $local_part or $domain).
- CVSS 3.0
- 9.8 CRITICALCVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
- EPSS
- 8.62% probability · 95th percentile
- Public exploits
- None in Exploit-DB
- CISA KEV
- Not listed
- Weakness
- CWE-19
- Affected
- exim/exim · debian/debian linux
- Source
- cve@mitre.org
EPSS 8.6% since 27 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.
References
- http://exim.org/static/doc/security/CVE-2019-13917.txtPatch, Vendor Advisory
- http://www.openwall.com/lists/oss-security/2019/07/26/5Third Party Advisory
- https://seclists.org/bugtraq/2019/Jul/51Third Party Advisory
- https://security.gentoo.org/glsa/201909-06
- https://www.debian.org/security/2019/dsa-4488Third Party Advisory
- http://exim.org/static/doc/security/CVE-2019-13917.txtPatch, Vendor Advisory
- http://www.openwall.com/lists/oss-security/2019/07/26/5Third Party Advisory
- https://seclists.org/bugtraq/2019/Jul/51Third Party Advisory
- https://security.gentoo.org/glsa/201909-06
- https://www.debian.org/security/2019/dsa-4488Third Party Advisory
Source: NVD record, EPSS from FIRST.org, KEV from CISA, exploits from Exploit-DB. Refreshed daily. Download this record as JSON.