CVE-2021-34551 describes a remote code execution vulnerability in PHPMailer versions prior to 6.5.0, specifically impacting Windows environments when the lang_path parameter contains untrusted data and a UNC pathname. This high-severity flaw (CVSS 8.1) could allow an unauthenticated attacker to achieve full compromise of confidentiality, integrity, and availability with high attack complexity. While there is no evidence of active exploitation, public exploit code, or KEV listing, the vulnerability has garnered some community discussion and media coverage, indicating awareness within the cybersecurity landscape.
| Vendor | Product | Version(s) | CPE |
|---|---|---|---|
< 6.5.0CPE matchmatch criteria | cpe:2.3:a:phpmailer_project:phpmailer:*:*:*:*:*:*:*:* | ||
33CPE matchmatch criteria | cpe:2.3:o:fedoraproject:fedora:33:*:*:*:*:*:*:* | ||
34CPE matchmatch criteria | cpe:2.3:o:fedoraproject:fedora:34:*:*:*:*:*:*:* |
CVSS version used by this source: 3.1
CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H
The average CVE in this peer group has 0.0 Twitter, 0.1 Reddit, 0.1 Bluesky, 0.1 Mastodon, and 0.2 GitHub mentions.
The average CVE in this peer group has 0.1 InfoSec Media, 0.0 Vendor Blog, and 0.0 Security Researcher mentions.