CVE-2023-0811 affects Omron CJ1M units v4.0 and prior, stemming from improper access controls on the memory region storing the UM password. An attacker can exploit this by issuing a PROGRAM AREA WRITE command to overwrite the password, potentially disabling user management protections or setting an unreadable password, thereby preventing legitimate access to the user program. This vulnerability is rated as Critical (CVSS 9.1), indicating a network-exploitable flaw with low attack complexity and high impact on integrity and availability. There is currently no evidence of active exploitation, public exploit code, or significant community discussion surrounding this CVE.
| Vendor | Product | Version(s) | CPE |
|---|---|---|---|
Range not provided by sourceCPE matchmatch criteria | cpe:2.3:o:omron:sysmac_cj2h-cpu64_firmware:-:*:*:*:*:*:*:* | ||
Range not provided by sourceCPE matchmatch criteria | cpe:2.3:o:omron:sysmac_cj2h-cpu64-eip_firmware:-:*:*:*:*:*:*:* | ||
Range not provided by sourceCPE matchmatch criteria | cpe:2.3:o:omron:sysmac_cj2h-cpu65_firmware:-:*:*:*:*:*:*:* | ||
Range not provided by sourceCPE matchmatch criteria | cpe:2.3:o:omron:sysmac_cj2h-cpu65-eip_firmware:-:*:*:*:*:*:*:* | ||
Range not provided by sourceCPE matchmatch criteria | cpe:2.3:o:omron:sysmac_cj2h-cpu66_firmware:-:*:*:*:*:*:*:* |
CVSS version used by this source: 3.1
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/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.