CVSS 3.1
9.8 criticalCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:HCVE-2020-28020
Critical (9.8) in exim exim. EPSS 7.9% chance of exploitation in the next 30 days.
Exim 4 before 4.92 allows Integer Overflow to Buffer Overflow, in which an unauthenticated remote attacker can execute arbitrary code by leveraging the mishandling of continuation lines during header-length restriction.
Severity
- EPSS
- 7.9% chance of exploitation in the next 30 days; higher than 94% of CVEs (scores of 2026-10-31)
- CWE
- CWE-190
- Published
- Modified
- Record from
- the NVD, synced
Affected
- exim:exim
References
- http://www.openwall.com/lists/oss-security/2021/07/25/1
- http://www.openwall.com/lists/oss-security/2021/08/03/1
- https://www.exim.org/static/doc/security/CVE-2020-qualys/CVE-2020-28020-HSIZE.txt
- http://www.openwall.com/lists/oss-security/2021/07/25/1
- http://www.openwall.com/lists/oss-security/2021/08/03/1