CVE-2021-23420

Exploitation

Not assessed. CISA has not published an exploitation assessment for this record, and it is not in the KEV catalog. That is an absence of assessment, not a finding of no risk.

SSVC decision

Not assessed by CISA

EPSS probability

2.71% probability of exploitation activity in the next 30 days.

EPSS percentile

Equal to or higher than the score of 85.7% of scored records. A rank, not a probability.

NVD base score

9.8 (CVSS v3.x), scored by the NVD independently of the CNA.

NVD CVSS vector

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

NVD analysis status

Modified. NVD last modified this record on 2026-06-17.

Red Hat severity

No Red Hat rating. Red Hat rates the CVEs that affect its products.

Exploit-prediction scores from FIRST. Independent scoring and analysis status from the NVD. Vendor severity from Red Hat. Exploitation assessment and catalog membership from CISA.

Published

2021-08-11 12:15Z5 YR AGO

Last updated

2024-09-16 17:33Z2 YR AGO

Reserved

2021-01-08

Assigning CNA

snyk

Record state

PUBLISHED

Severity

High (CVSS 7.7)

CNA CVSS vector

CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:L/E:F/RL:O/RC:C

Weaknesses

• CWE-502Deserialization of Untrusted DataBase

Data version

5.1

Document digest

74280d0044751c72dffba1ac88f704a3457dfaa2bdd91901686e881754b6614d

• github.comhttps://github.com/JinYiTong/pocx_refsource_MISC
• snyk.iohttps://snyk.io/vuln/SNYK-PHP-CODECEPTIONCODECEPTION-1324585x_refsource_MISC
• github.comhttps://github.com/Codeception/Codeception/blob/4.1/ext/RunProcess.php%23L52x_refsource_MISC
• github.comhttps://github.com/Codeception/Codeception/pull/6241x_refsource_MISC