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01 Record

CVE-2023-4809

pf incorrectly handles multiple IPv6 fragment headers

UnratedPUBLISHEDCNA: freebsd
CNA base scoreUnratedNo CNA CVSS vector

02 Description

pf incorrectly handles multiple IPv6 fragment headers

03 Exploitation and scoring

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
0.80% probability of exploitation activity in the next 30 days.
EPSS percentile
Equal to or higher than the score of 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: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.

04 Metadata

Published
2023-09-06 19:26Z3 YR AGO
Last updated
2025-02-13 17:18Z1 YR AGO
Reserved
2023-09-06
Assigning CNA
freebsd
Record state
PUBLISHED
Severity
Not rated by the issuing CNA
CNA CVSS vector
Not published by the issuing CNA
Weaknesses
  • CWE-167Improper Handling of Additional Special ElementBase
Data version
5.1
Document digest
12f1a406fbaac7c9cad9eb6dca4963f2b67944b65c69f63c90980768a7d7b94e

05 Affected products

VendorProductVersionsPlatforms
FreeBSDFreeBSD13.2-RELEASE to < p3, 12.4-RELEASE to < p5—

06 References