CVE-2021-47154

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

0.49% probability of exploitation activity in the next 30 days.

EPSS percentile

Equal to or higher than the score of 42.0% of scored records. A rank, not a probability.

NVD base score

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

NVD CVSS vector

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

NVD analysis status

Deferred. 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

2024-03-18 00:00Z2 YR AGO

Last updated

2024-11-15 21:46Z1 YR AGO

Reserved

2024-03-18

Assigning CNA

mitre

Record state

PUBLISHED

Severity

Medium (CVSS 6.3)

CNA CVSS vector

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

Weaknesses

• CWE-20Improper Input ValidationClass

Data version

5.1

Document digest

4146b8404d1c6a8c8dac435f4fbfc511a22025baf695fb4e4432e15b46c34bf0

• blog.urth.orghttps://blog.urth.org/2021/03/29/security-issues-in-perl-ip-address-distros/
• metacpan.orghttps://metacpan.org/pod/Net::CIDR::Lite
• github.comhttps://github.com/stigtsp/Net-CIDR-Lite/commit/23b6ff0590dc279521863a502e890ef19a5a76fc
• metacpan.orghttps://metacpan.org/dist/Net-CIDR-Lite/changes
• lists.debian.org[debian-lts-announce] 20240323 [SECURITY] [DLA 3770-1] libnet-cidr-lite-perl security updatehttps://lists.debian.org/debian-lts-announce/2024/03/msg00023.htmlmailing-list