CVE-2026-65819

HIGHPre-NVD 7.57.5—
EchelonGraph scoreMEDIUM confidence

This high-severity CVE scores 7.5 under a secondary CVSS source (NVD's own analysis pending). EPSS exploit probability: 0.4%, top 70% of all CVEs by exploit prediction. GitHub Security Advisory data not yet ingested — confidence will rise once GHSA publishes (typical lag: hours to days for open-source ecosystem CVEs; never for infrastructure-only CVEs).

Triggered by: NVD CVSS baseline
Sources: epss, secondary
7.5EG
EchelonGraph verdictPlan a fixSerious severity, but no confirmed exploitation yet.
  • High severity, but no confirmed exploitation yet
CISA-KEV: Not listedEPSS PROB: 0%CVSS: 7.5Exploit: None knownExposed: 0

No vendor fix yet — apply a workaround or compensating control (WAF / firewall / segmentation) and watch for a patch.

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 v3
7.5
EG Score
7.5(medium)
EG Risk
49(Track)
EG Risk 49/100SSVC: Track

EG Risk is EchelonGraph's 0–100 priority score: it fuses intrinsic severity with real-world exploitation and automatability so you can rank equal-severity CVEs and fix the most dangerous first. Higher = act sooner. Distinct from the 0–10 EG Score (severity).

How it’s computed
Severity75% × 45%
Exploitation0% × 40%
Automatability100% × 15%
Action: Routine — remediate on your standard cadence.
EPSS PROB
0%
EPSS %ILE
30%
KEV
Not listed

Published

August 7, 2026

Last Modified

August 11, 2026

Advisory Details (3)

Auto-updated Aug 7, 2026
Patch available. Sources: github, github_commit, github_release.
github_release Patch Available

v1.7.0

Patch available: gopacket/gopacket v1.7.0

https://github.com/gopacket/gopacket/releases/tag/v1.7.0
github_commit

commit 210f25fb9b3c (gopacket/gopacket)

Fix landed in gopacket/gopacket commit 210f25fb9b3c — awaiting tagged release

https://github.com/gopacket/gopacket/commit/210f25fb9b3ca1af2eb649936f78ad6991b6c9c5
github Patch Available

Multiple layer decoders panic on crafted packets (out-of-bounds/underflow) enabling unauthenticated remote DoS via DecodingLayerParser · Advisory · gopacket/gopacket · GitHub

https://github.com/gopacket/gopacket/security/advisories/GHSA-8mcr-459q-5mx2

Vendor Advisories for CVE-2026-65819(1)

These vendors published their own advisory mentioning this CVE — often with vendor-specific remediation steps + affected product lists not in NVD.

Affected Packages

(7 across 4 ecosystems)
Debian:12(2)
PackageVulnerable rangeFixed inDependents
golang-github-gopacket-gopacket1.0.0-1, 1.2.0-1, 1.2.0-2, 1.3.0-1, 1.3.0-2——
gopacket1.1.19-3 ... 1.1.19-6.2 (6 versions)——
Debian:13(2)
PackageVulnerable rangeFixed inDependents
golang-github-gopacket-gopacket1.3.0-2——
gopacket1.1.19-6.2——
Debian:14(2)
PackageVulnerable rangeFixed inDependents
golang-github-gopacket-gopacket1.3.0-2——
gopacket1.1.19-6.2——
Debian:11(1)
PackageVulnerable rangeFixed inDependents
gopacket1.1.19-1 ... 1.1.19-6.2 (8 versions)——

Weakness Classification(2)

MITRE Common Weakness Enumeration — the root-cause categories this CVE belongs to.

Data Freshness Timeline

(refreshed 13× in last 7d / 26× in last 30d)

Each row is a source pipeline that fetched or updated this CVE on that date, with what changed. For example, "NVD update" means NVD published or revised its analysis for this CVE; "MITRE cvelistV5" means we ingested or refreshed it from the CNA feed. Most recent first.

  1. 2026-08-19 19:23 UTCEG score recompute
  2. 2026-08-19 17:04 UTCEPSS rescore
  3. 2026-08-18 20:02 UTCEG score recompute
  4. 2026-08-18 13:48 UTCEPSS rescore
  5. 2026-08-17 20:47 UTCEG score recompute
  6. 2026-08-17 13:47 UTCEPSS rescore
  7. 2026-08-16 21:35 UTCEG score recompute
  8. 2026-08-16 14:56 UTCEPSS rescore
  9. 2026-08-16 09:58 UTCEG score recompute
  10. 2026-08-15 10:47 UTCEG score recompute
  11. 2026-08-15 01:30 UTCEPSS rescore
  12. 2026-08-13 23:59 UTCEG score recompute
  13. 2026-08-13 22:00 UTCEPSS rescore
  14. 2026-08-13 00:46 UTCEG score recompute
  15. 2026-08-12 13:51 UTCEPSS rescore
  16. 2026-08-11 13:58 UTCEG score recompute
  17. 2026-08-11 02:22 UTCEG score recompute
  18. 2026-08-11 01:28 UTCEG score recompute
  19. 2026-08-11 00:00 UTCEPSS rescore
  20. 2026-08-09 18:54 UTCEG score recompute
  21. 2026-08-09 13:47 UTCEPSS rescore
  22. 2026-08-08 19:42 UTCEG score recompute
  23. 2026-08-08 16:37 UTCEPSS rescore
  24. 2026-08-07 20:30 UTCEG score recompute
  25. 2026-08-07 19:37 UTCEG score recompute
Show 1 more
  1. 2026-08-07 19:37 UTCMITRE cvelistV5first tracked

Related CVEs(same CWE)

Frequently asked(5)

What is CVE-2026-65819?
CVE-2026-65819 is a high vulnerability published on August 7, 2026. 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…
When was CVE-2026-65819 disclosed?
CVE-2026-65819 was first published in the National Vulnerability Database on August 7, 2026, with the most recent update on August 11, 2026. EchelonGraph re-ingests CVE updates from NVD on a 2-hour cycle, so this page reflects the latest published state.
Is CVE-2026-65819 actively exploited?
CVE-2026-65819 is not currently on CISA's Known Exploited Vulnerabilities catalog. FIRST EPSS estimates a 0% probability of exploitation in the next 30 days, which ranks it in the top 70.2% of all scored CVEs.
What is the CVSS score of CVE-2026-65819?
CVE-2026-65819 has a CVSS v3 base score of 7.5 (NVD).
How do I remediate CVE-2026-65819?
Patch to the fixed version published by the affected vendor. Where vendor advisories exist for CVE-2026-65819, EchelonGraph cross-links them in the Vendor Advisories panel below — those typically contain the canonical remediation steps, fixed version numbers, and any vendor-specific mitigations.

Dependency Blast Radius

See which npm, PyPI, Go, and Maven packages are affected by CVE-2026-65819

Explore →

Is Your Infrastructure Affected by CVE-2026-65819?

EchelonGraph automatically scans your cloud infrastructure and maps CVE exposure using blast radius analysis.

Start Free Scan →Browse All CVEs