CVE-2021-43173

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

1.39% probability of exploitation activity in the next 30 days.

EPSS percentile

Equal to or higher than the score of 72.1% 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:H/A:N

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

2021-11-09 16:41Z4 YR AGO

Last updated

2024-09-16 18:18Z2 YR AGO

Reserved

2021-11-01

Assigning CNA

NLnet Labs

Record state

PUBLISHED

Severity

Not rated by the issuing CNA

CNA CVSS vector

Not published by the issuing CNA

Weaknesses

• CWE-755Improper Handling of Exceptional ConditionsClass
• CWE-400Uncontrolled Resource ConsumptionClass

Data version

5.1

Document digest

91dbcae72915bf2697e315d0fc04635da7ff53583867e92b1c00288f3da2c1b9

• www.nlnetlabs.nlhttps://www.nlnetlabs.nl/downloads/routinator/CVE-2021-43172_CVE-2021-43173_CVE-2021-43174.txtx_refsource_MISC
• www.debian.orgDSA-5033https://www.debian.org/security/2021/dsa-5033vendor-advisoryx_refsource_DEBIAN
• www.debian.orgDSA-5041https://www.debian.org/security/2022/dsa-5041vendor-advisoryx_refsource_DEBIAN