CVE-2021-43825

Exploitation

Assessed, none found. CISA's assessment recorded neither public exploit code nor evidence of exploitation when it was made.

SSVC decision

• ExploitationnoneCISA recorded no public exploit code and no evidence of exploitation.
• AutomatablenoAt least one step from reconnaissance to exploitation cannot be reliably automated.
• Technical ImpactpartialSuccessful exploitation gives limited control of the vulnerable component.

CISA publishes the decision points, not a final SSVC decision. The decision also depends on mission and well-being impact, which is a property of your deployment rather than of the vulnerability.

EPSS probability

0.88% probability of exploitation activity in the next 30 days.

EPSS percentile

Ranks above 56.4% of scored records. A rank, not a probability.

NVD base score

7.5 (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:N/I:N/A:H

NVD analysis status

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

Red Hat severity

Moderate. Red Hat's rating for its own products, not a CVSS rating.

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

2022-02-22 22:45Z4 YR AGO

Last updated

2025-04-23 19:01Z1 YR AGO

Reserved

2021-11-16

Assigning CNA

GitHub_M

Record state

PUBLISHED

Severity

Medium (CVSS 6.1)

CNA CVSS vector

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

Weaknesses

• CWE-416Use After FreeVariant

Data version

5.1

Document digest

1f0d8e5916e5fb6bcbf993948ba920ac2ba9e9a03c1b57f1170e7de261197eda

• github.comhttps://github.com/envoyproxy/envoy/security/advisories/GHSA-h69p-g6xg-mhhhx_refsource_CONFIRM
• github.comhttps://github.com/envoyproxy/envoy/commit/148de954ed3585d8b4298b424aa24916d0de6136x_refsource_MISC