CVE-2021-42029 is a privilege escalation vulnerability affecting the web server of SIMATIC STEP 7 (TIA Portal) V15, V16 (prior to Update 5), and V17 (prior to Update 2). An attacker with direct access to the web server can exploit improper access control in the engineering system software to gain elevated privileges. This vulnerability carries a CVSS score of 7.8 (High), indicating a significant impact on confidentiality, integrity, and availability, with low attack complexity and requiring local access. There is currently no evidence of active exploitation, public exploit code (Metasploit, Nuclei, ExploitDB), or significant community discussion or media coverage.
| Vendor | Product | Version(s) | CPE |
|---|---|---|---|
>= 15, < 16CPE matchmatch criteria | cpe:2.3:a:siemens:simatic_step_7:*:*:*:*:*:*:*:* | ||
16CPE matchmatch criteria | cpe:2.3:a:siemens:simatic_step_7:16:-:*:*:*:*:*:* | ||
16CPE matchmatch criteria | cpe:2.3:a:siemens:simatic_step_7:16:update1:*:*:*:*:*:* | ||
16CPE matchmatch criteria | cpe:2.3:a:siemens:simatic_step_7:16:update2:*:*:*:*:*:* | ||
16CPE matchmatch criteria | cpe:2.3:a:siemens:simatic_step_7:16:update3:*:*:*:*:*:* |
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.
No media coverage found for this CVE.
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.