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CVE-2026-54345

MEDIUM Exploitation: PoC
6.9
CVSS 4.0
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.

Metadata

CVE ID
CVE-2026-54345
State
PUBLISHED
Assigner
GitHub_M
Reserved
2026-06-12 19:23 UTC
Published
2026-07-28 16:14 UTC
Last updated
2026-07-28 17:11 UTC
Primary CWE
CWE-191
CWE-191: Integer Underflow (Wrap or Wraparound)
Vendor / Product
gopacket / gopacket
Sources
cve.org  ·  NVD

Severity & Metrics

6.9 MEDIUM CVSS 4.0
CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:L/SC:N/SI:N/SA:N
SSVC — CISA Coordinator
Exploitation
PoC
Automatable
yes
Tech. Impact
partial
Affected products (1)
VendorProductPlatformVersions
gopacket gopacket — < 1.6.1
Weakness (CWE)
CWESourceDescription
CWE-191 cna CWE-191: Integer Underflow (Wrap or Wraparound)
CWE-770 cna CWE-770: Allocation of Resources Without Limits or Throttling
CVSS scores (1)
ScoreSeverityVersionSourceVector
6.9 MEDIUM 4.0 cna CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:L/SC:N/SI:N/SA:N
References (3)
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