gopacket provides packet processing capabilities for Go. In version 1.6.0 and earlier, the sFlow ExtendedGatewayFlow decoder in layers/sflow.go reads an attacker-controlled 32-bit community count and AS path member count and sizes a slice allocation from those counts without bounding them against the bytes remaining in the datagram, so a 104-byte UDP datagram can drive an allocation of up to 16 GiB and cause an unauthenticated remote denial of service. This issue is fixed in version 1.6.1.
CVE-2026-54332
MEDIUMPre-NVD 6.96.9
EchelonGraph scoreLOW confidence
This medium-severity CVE scores 6.9 under a secondary CVSS source (NVD's own analysis pending). EPSS exploit-prediction score not yet available (the EPSS model rescores nightly; freshly-published CVEs typically appear within 48 hours). 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: secondary
6.9EG
EchelonGraph verdictMonitorLow exploitation likelihood right now — keep watching.
- Lower severity and no public exploit yet
CISA-KEV: Not listedEPSS PROB: —CVSS: 6.9Exploit: None knownExposed: 0
No vendor fix yet — apply a workaround or compensating control (WAF / firewall / segmentation) and watch for a patch.
- CVSS v3
- 6.9
- EG Score
- 6.9(low)
- EG Risk
- 36(Track)EG Risk 36/100SSVC: 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 computedSeverity69% × 45%Exploitation0% × 40%Automatability30% × 15%Action: Routine — remediate on your standard cadence. - EPSS PROB
- —
- EPSS %ILE
- —
- KEV
- Not listed
Published
July 28, 2026
Last Modified
July 28, 2026
Advisory Details (3)
Auto-updated Jul 28, 2026🔬 Proof of concept available. Patch available. Sources: github, github_commit, github_release.
github_release Patch Available
v1.6.1
Patch available: gopacket/gopacket v1.6.1
https://github.com/gopacket/gopacket/releases/tag/v1.6.1github_commit Patch Available
commit 76119086f593 (gopacket/gopacket)
Patch available: gopacket/gopacket v1.6.1 (contains commit 76119086f593)
https://github.com/gopacket/gopacket/commit/76119086f5936aacd7088bdf97d565501bb6c4ccgithub Patch Available🟡 PoC Available
sFlow ExtendedGatewayFlow decoder: unbounded attacker-controlled allocation (104-byte UDP datagram -> up to 16 GiB make) -> unauthenticated remote DoS · Advisory · gopacket/gopacket · GitHub
https://github.com/gopacket/gopacket/security/advisories/GHSA-g6v3-7xmc-w563Vendor Advisories for CVE-2026-54332(1)
These vendors published their own advisory mentioning this CVE — often with vendor-specific remediation steps + affected product lists not in NVD.
Weakness Classification(1)
MITRE Common Weakness Enumeration — the root-cause categories this CVE belongs to.
Data Freshness Timeline
(refreshed 4× in last 7d / 4× 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.
- 2026-07-28 17:23 UTCEG score recompute
- 2026-07-28 16:54 UTCEG score recompute▲ 6.90
- 2026-07-28 16:53 UTCMITRE cvelistV5CVSS v3 → 6.9 · CVSS v4 → 6.9
- 2026-07-28 16:24 UTCEG score recompute
Related CVEs(same CWE)
Same CWE
10 shownCWE-770
Frequently asked(4)
What is CVE-2026-54332?
CVE-2026-54332 is a medium vulnerability published on July 28, 2026. gopacket provides packet processing capabilities for Go. In version 1.6.0 and earlier, the sFlow ExtendedGatewayFlow decoder in layers/sflow.go reads an attacker-controlled 32-bit community count and AS path member count and sizes a slice allocation from those counts without bounding them against…
When was CVE-2026-54332 disclosed?
CVE-2026-54332 was first published in the National Vulnerability Database on July 28, 2026. EchelonGraph re-ingests CVE updates from NVD on a 2-hour cycle, so this page reflects the latest published state.
What is the CVSS score of CVE-2026-54332?
CVE-2026-54332 has a CVSS v3 base score of 6.9 (NVD). The EG score is currently aggregating — additional source signals are being incorporated as they become available..
How do I remediate CVE-2026-54332?
Patch to the fixed version published by the affected vendor. Where vendor advisories exist for CVE-2026-54332, 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
Explore the affected products and dependency analysis for CVE-2026-54332
Is Your Infrastructure Affected by CVE-2026-54332?
EchelonGraph automatically scans your cloud infrastructure and maps CVE exposure using blast radius analysis.