CVE-2018-4834 describes a critical authentication bypass vulnerability in various Siemens Desigo PXC and PXM series building automation controllers. An unauthenticated remote attacker can exploit this flaw to upload malicious firmware, potentially gaining full control over the affected devices. With a CVSS score of 9.8, this vulnerability poses a significant risk due to its network-based attack vector, low complexity, and high impact on confidentiality, integrity, and availability. While no public exploits or active exploitation have been identified, and community discussion is minimal, the potential for severe disruption necessitates immediate patching of all vulnerable systems.
| Vendor | Product | Version(s) | CPE |
|---|---|---|---|
< 6.00.204CPE matchmatch criteria | cpe:2.3:o:siemens:pxc12\/22\/36-e.d_firmware:*:*:*:*:*:*:*:* | ||
< 6.00.204CPE matchmatch criteria | cpe:2.3:o:siemens:pxc00\/50\/100\/200-e.d_firmware:*:*:*:*:*:*:*:* | ||
< 6.00.204CPE matchmatch criteria | cpe:2.3:o:siemens:pxc00\/64\/128-u_firmware:*:*:*:*:*:*:*:* | ||
< 6.00.204CPE matchmatch criteria | cpe:2.3:o:siemens:pxc001-e.d_firmware:*:*:*:*:*:*:*:* | ||
< 6.00.204CPE matchmatch criteria | cpe:2.3:o:siemens:pxm20-e_firmware:*:*:*:*:*:*:*:* |
CVSS version used by this source: 3.1
CVSS:3.1/AV:N/AC:L/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, 0.3 Bluesky, 0.3 Mastodon, and 2.4 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.