CVE-2020-28016 describes an off-by-two out-of-bounds write vulnerability in Exim 4, specifically versions prior to 4.94.2, due to improper handling of "-F ''" by the parse_fix_phrase function. This vulnerability carries a high CVSS score of 7.8, indicating a significant risk with potential for high impact on confidentiality, integrity, and availability, though it requires local access and low privileges to exploit. While there is no evidence of active exploitation (KEV list), public exploit code (Metasploit, Nuclei, ExploitDB) is currently unavailable, and community discussion and media coverage are limited despite a critical article from BleepingComputer.
| Vendor | Product | Version(s) | CPE |
|---|---|---|---|
>= 4.00, < 4.94.2CPE matchmatch criteria | cpe:2.3:a:exim:exim:*:*:*:*:*:*:*:* |
CVSS version used by this source: 3.1
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
The average CVE in this peer group has 0.0 Twitter, 0.1 Reddit, 0.2 Bluesky, 0.1 Mastodon, and 0.2 GitHub mentions.
The average CVE in this peer group has 0.3 InfoSec Media, 0.0 Vendor Blog, and 0.0 Security Researcher mentions.
Remediation records are not available for this CVE.