Checkbox Survey Deserialization of Untrusted Data Vulnerability (CVE-2021-27852)
Severity: critical · Patch status: unpatched · Since 2022-04-11 · CVE-2021-27852
Deserialization of Untrusted Data vulnerability in CheckboxWeb.dll of Checkbox Survey allows an unauthenticated remote attacker to execute arbitrary code. CISA added CVE-2021-27852 to its Known Exploited Vulnerabilities catalog on Apr 11, 2022, which means attackers are exploiting it in the wild.
What to do
- Versions 6 and earlier for this product are end-of-life and must be removed from agency networks. Versions 7 and later are not considered vulnerable.
- US federal agencies must remediate by May 2, 2022 (BOD 22-01); treat that as the outer limit.
Sources
All live incidents on Threat Watch
