CVE-2021-27385 is a Denial-of-Service vulnerability affecting various Siemens SIMATIC HMI panels, WinCC Runtime Advanced, and SINAMICS products. A remote unauthenticated attacker can exploit this by sending specially crafted packets to the SmartVNC device layout handler, leading to an infinite loop and resource exhaustion. Rated 7.5 HIGH on CVSS, this vulnerability has a low attack complexity and high impact on availability. There is no evidence of active exploitation, public exploit code, or significant community discussion surrounding this CVE.
| Vendor | Product | Version(s) | CPE |
|---|---|---|---|
< 16CPE matchmatch criteria | cpe:2.3:a:siemens:simatic_wincc_runtime_advanced:*:*:*:*:*:*:*:* | ||
16CPE matchmatch criteria | cpe:2.3:a:siemens:simatic_wincc_runtime_advanced:16:-:*:*:*:*:*:* | ||
16CPE matchmatch criteria | cpe:2.3:a:siemens:simatic_wincc_runtime_advanced:16:update1:*:*:*:*:*:* | ||
16CPE matchmatch criteria | cpe:2.3:a:siemens:simatic_wincc_runtime_advanced:16:update2:*:*:*:*:*:* | ||
16CPE matchmatch criteria | cpe:2.3:a:siemens:simatic_wincc_runtime_advanced:16:update3:*:*:*:*:*:* |
CVSS version used by this source: 3.1
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
The average CVE in this peer group has 0.0 Twitter, 0.0 Reddit, 0.1 Bluesky, 0.1 Mastodon, and 0.4 GitHub mentions.
No media coverage found for this CVE.
The average CVE in this peer group has 0.1 InfoSec Media, 0.0 Vendor Blog, and 0.0 Security Researcher mentions.
Remediation records are not available for this CVE.