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CVE-2026-54345

Gopacket integer overflow

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 Diameter AVP decoder computes an AVP data length by subtracting a fixed header size from an attacker-controlled AVP Length field, so a vendor-flagged AVP whose Length is smaller than the 12-byte header underflows the unsigned 32-bit value and drives an unbounded allocation of roughly 4 GiB, and two such messages in succession OOM-kill a collector, causing 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-2026-54345 being actively exploited?

CVE-2026-54345 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-2026-54345?

CVE-2026-54345 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-2026-54345?

Affected products include Gopacket.

How do I fix CVE-2026-54345?

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

Secuno correlates vulnerabilities like CVE-2026-54345 against the real software inventory on every managed device, every day. Rather than a static severity, each match is scored in context: exploit availability, EPSS, the asset's exposure, and business criticality decide where it lands in the queue. If an affected version is present anywhere across your portfolio, it surfaces automatically with a prioritised remediation path.

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