CVEvulnerability

CVE-2021-27852

9.8 CRITICAL Known exploited Published 2021-05-27 Modified 2026-06-17 Official page ↗

CISA Known Exploited Vulnerability

Checkbox Survey Deserialization of Untrusted Data Vulnerability — Checkbox Checkbox Survey

Deserialization of Untrusted Data vulnerability in CheckboxWeb.dll of Checkbox Survey allows an unauthenticated remote attacker to execute arbitrary code.

Added to KEV
2022-04-11
Remediation due
2022-05-02
Ransomware use
Unknown
Required action
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.
Notes
https://nvd.nist.gov/vuln/detail/CVE-2021-27852
Status
Analyzed
Published
2021-05-27
Last modified
2026-06-17
Assigner
[email protected]
CVSS 3.1 ([email protected])
9.8 CRITICAL — CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
CVSS 3.1 ([email protected])
9.8 CRITICAL — CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
CVSS 2.0 ([email protected])
7.5 HIGH — AV:N/AC:L/Au:N/C:P/I:P/A:P
Weaknesses
CWE-502

Description

Deserialization of Untrusted Data vulnerability in CheckboxWeb.dll of Checkbox Survey allows an unauthenticated remote attacker to execute arbitrary code. This issue affects: Checkbox Survey versions prior to 7.

Affected configurations

• checkbox survey (< 7.0)

Related

Weakness · CWE (1)

  • CWE-502 Deserialization of Untrusted Data weakness

References