7.5

CVE-2026-65819: gopacket Out-of-bounds Read

CVSS: 7.5v3.1HighDeferred
AliasesUBUNTU-CVE-2026-65819DEBIAN-CVE-2026-65819CGA-2pq2-5qmf-6q6r
Published 07-08-2026Last modified 11-08-2026
Open JSON

Vulnerability summary

CVE-2026-65819 is a high (CVSS 7.5) Out-of-bounds Read vulnerability in gopacket. EPSS estimates a 0.66% chance of exploitation in the next 30 days, higher than 50.4% of scored vulnerabilities.

Overall risk
30/100
0100
Medium · default modelHow is this calculated?
CVSS score
7.5/10
010
High · v3.1 (CVE.org)
EPSS score
0.66%
0%100%
Low · +0.30 pp in 30 days
KEVNot listedIn no KEV catalog
RansomwareNone recordedNo known use recorded
Public exploits0No public exploits recorded

Advisory lineage

Upstream 0 · Downstream 0 · Related 1
CGA-XR9J-69XJ-CFM2

Timeline

  1. 07-08-2026
    PublishedVulnerability first disclosed.
  2. 11-08-2026
    Last modifiedVulnerability information updated.

Description

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.

CVSS metrics

6 scores · 6 sources · 1 version

EPSS trend

Probability

0.66%

Chance of exploitation in the next 30 days

Percentile

50%

Versus all other CVEs

30-day change

+0.30 pp

From 0.36% on 18-09-2026

18-09-202618-10-2026
EPSS score
0.66%

Known exploited

Compare KEV catalogs

Not in any of the 3 tracked catalogs.

Public exploits

0 found

No public exploits indexed.

Weaknesses

CWE · root cause

Affected systems

Chainguard50 products
  • calico-felix-3.32< 3.32.2-r2 | < 3.32.2-r3
  • calico-felix-fips-3.32< 3.32.2-r2
  • calico-goldmane-3.32< 3.32.2-r3
  • calico-key-cert-provisioner-3.32< 3.32.2-r3
  • calico-node-3.32< 3.32.2-r2
Wolfi15 products
  • calico-felix-3.32< 3.32.2-r2 | < 3.32.2-r3
  • calico-goldmane-3.32< 3.32.2-r3
  • calico-key-cert-provisioner-3.32< 3.32.2-r3
  • calico-node-3.32< 3.32.2-r2
  • calico-typhad-3.32< 3.32.2-r3
Debian2 products
  • golang-github-gopacket-gopacketAll versions (No fix recorded)
  • gopacketAll versions (No fix recorded)
Gopacket1 product
Ubuntu1 product
  • golang-github-gopacket-gopacketAll versions (No fix recorded)

5 vendors · 69 products

References

8 links