CVE-2021-25660 is an out-of-bounds memory access vulnerability in the SmartVNC component of various Siemens SIMATIC HMI panels and WinCC Runtime Advanced versions. An unauthenticated attacker can trigger a Denial-of-Service (DoS) condition by sending specially crafted data from a client to the server. This vulnerability has a CVSS v3.1 score of 7.5 (HIGH), indicating a high impact on availability with low attack complexity and no user interaction required. There is currently 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:o:siemens:simatic_hmi_comfort_outdoor_panels_7\"_firmware:*:*:*:*:*:*:*:* | ||
16CPE matchmatch criteria | cpe:2.3:o:siemens:simatic_hmi_comfort_outdoor_panels_7\"_firmware:16:-:*:*:*:*:*:* | ||
16CPE matchmatch criteria | cpe:2.3:o:siemens:simatic_hmi_comfort_outdoor_panels_7\"_firmware:16:update1:*:*:*:*:*:* | ||
16CPE matchmatch criteria | cpe:2.3:o:siemens:simatic_hmi_comfort_outdoor_panels_7\"_firmware:16:update2:*:*:*:*:*:* | ||
16CPE matchmatch criteria | cpe:2.3:o:siemens:simatic_hmi_comfort_outdoor_panels_7\"_firmware: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.