Wago 750-880/040-000 Firmware vulnerabilities

3 CVEs affecting Wago 750-880/040-000 Firmware, 0 known to be exploited (CISA KEV), with EPSS scores. Latest: CVE-2023-1620, published 2023-06-26.

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Known exploited (CISA KEV) first, then by EPSS exploit probability.

• CVE-2021-34581, published 2021-08-31. High severity, CVSS 7.5. EPSS: 1% chance of exploitation in the next 30 days. Missing Release of Resource after Effective Lifetime vulnerability in OpenSSL implementation of WAGO 750-831/xxx-xxx, 750-880/xxx-xxx, 750-881, 750-889 in versions FW4 up to FW15 allows an…
• CVE-2023-1620, published 2023-06-26. Medium severity, CVSS 4.9. EPSS: 0.9% chance of exploitation in the next 30 days. Multiple WAGO devices in multiple versions may allow an authenticated remote attacker with high privileges to DoS the device by sending a specifically crafted packet to the CODESYS V2 runtime.
• CVE-2023-1619, published 2023-06-26. Medium severity, CVSS 4.9. EPSS: 0.8% chance of exploitation in the next 30 days. Multiple WAGO devices in multiple versions may allow an authenticated remote attacker with high privileges to DoS the device by sending a malformed packet.