Out-of-bounds Read in Gopacket

CVE-2026-65819

gopacket provides packet processing capabilities for Go. Through version 1.7.0, multiple layer decoders use attacker-controlled lengths, counts, or offsets before validating them against packet buffers, allowing a crafted packet decoded through DecodingLayerParser or DecodeFromBytes to trigger an unrecovered panic and remotely deny service. A patch commit is available at 210f25f.

Vulnerability class: Buffer Overflow

Published · last modified .

CVSS v3 metric

CVSS v3 base score 7.5 (High). Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H.

EPSS exploit prediction

EPSS: 0.004 (30.0th percentile), scored .

Very low probability of exploitation in the next 30 days; routine patching cadence is appropriate. 30th percentile — 30.0% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.

EPSS trend (30 days)EPSS over the last 30 days for CVE-2026-65819: held from 0.007 to 0.004.

EPSS over last 30 days · oldest: 0.007 · newest: 0.004 · change: -0.003

Affected products

Weakness classification (CWE)

References

Frequently asked questions

What is CVE-2026-65819?
CVE-2026-65819 is a high-severity vulnerability in Gopacket, classified under Out-of-bounds Read. CVSS score: 7.5/10. Published 2026-08-07.
How severe is CVE-2026-65819?
High severity. CVSS v3 base score is 7.5 out of 10.