PatchTheCVErtu520 firmware vulnerabilities and fixes
Recent CVEs affecting rtu520 firmware, with upgrade or downgrade steps. 2 tracked.
Also searched as: rtu520firmware.
rtu520 firmware has 2 tracked vulnerabilities, 0 critical. A fixed release or vendor patch exists for 2. Most recent: 2026-02-24. Highest priority: CVE-2026-1773 (score 41/100).
- CVE-2026-1773 HIGH 7.5 UPGRADE UPGRADE IEC 60870-5-104 used in RTU500: Potential Denial of Service impact on reception of invalid U-format frame. Pro
- CVE-2026-1772 MEDIUM 5.3 UPGRADE UPGRADE RTU500 web interface: An unprivileged user can read user management information
FAQ
How do I fix rtu520 firmware vulnerabilities?
Open the CVE for your version, check the affected range, then follow the listed action: upgrade to the fixed release, or downgrade or mitigate if no fix exists yet. Commands for each OS are shown on every CVE page.
Is rtu520 firmware being exploited right now?
None of the tracked rtu520 firmware CVEs are on the CISA Known Exploited Vulnerabilities list at the moment. This is checked every 20 minutes.
Which rtu520 firmware CVE should I patch first?
CVE-2026-1773 currently ranks highest (41/100): IEC 60870-5-104 used in RTU500: Potential Denial of Service impact on reception of invalid U-format frame. Pro.