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CVE-2026-54332

Gopacket denial of service

7.5 HIGHPublic exploitEPSS 0.79%
  1. Published28 Jul 2026

Description

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.

CVSS 3.1 breakdown

Attack vectorNetwork
Attack complexityLow
Privileges requiredNone
User interactionNone
ScopeUnchanged
ConfidentialityNone
IntegrityNone
AvailabilityHigh
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H

Affected products

Gopacket< 1.6.1

Remediation

Fixed in
Gopacket≥ 1.6.1

References

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Frequently asked

Is CVE-2026-54332 being actively exploited?

CVE-2026-54332 is not in the CISA KEV catalog. A public exploit reference exists, so treat it as exploitable. Its EPSS exploit probability is 0.79%.

How severe is CVE-2026-54332?

CVE-2026-54332 has a CVSS 3.1 base score of 7.5, rated high. EPSS estimates a 0.79% probability of exploitation.

Which products are affected by CVE-2026-54332?

Affected products include Gopacket.

How do I fix CVE-2026-54332?

Upgrade affected software to a fixed version, for example Gopacket 1.6.1 or later, then confirm no affected versions remain in your inventory.

How Secuno handles this

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Data from the NVD, CISA KEV catalog and FIRST EPSS. CVSS 3.1 base score shown where available.