gopacket up to 1.7.0 Layer Decoders DecodeFromBytes buffer overflow

CVSS Meta Temp Score
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Current Exploit Price (≈)
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CTI Interest Score
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5.1$0-$5k2.17+

Summaryinfo

A vulnerability, which was classified as problematic, was found in gopacket up to 1.7.0. This impacts the function DecodeFromBytes of the component Layer Decoders. Executing a manipulation can lead to buffer overflow. This vulnerability appears as CVE-2026-65819. The attack may be performed from remote. There is no available exploit.

Detailsinfo

A vulnerability was found in gopacket up to 1.7.0. It has been declared as problematic. This vulnerability affects the function DecodeFromBytes of the component Layer Decoders. The manipulation with an unknown input leads to a buffer overflow vulnerability. The CWE definition for the vulnerability is CWE-120. The product copies an input buffer to an output buffer without verifying that the size of the input buffer is less than the size of the output buffer, leading to a buffer overflow. As an impact it is known to affect availability. CVE summarizes:

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.

The advisory is shared for download at github.com. This vulnerability was named CVE-2026-65819 since 07/23/2026. The exploitation appears to be easy. The attack can be initiated remotely. No form of authentication is required for a successful exploitation. There are known technical details, but no exploit is available.

Applying the patch 210f25f is able to eliminate this problem.

VulDB is the best source for vulnerability data and more expert information about this specific topic.

Productinfo

Name

Version

Website

CPE 2.3info

CPE 2.2info

CVSSv4info

VulDB Vector: 🔒
VulDB Reliability: 🔍

CVSSv3info

VulDB Meta Base Score: 5.3
VulDB Meta Temp Score: 5.1

VulDB Base Score: 5.3
VulDB Temp Score: 5.1
VulDB Vector: 🔒
VulDB Reliability: 🔍

CVSSv2info

AVACAuCIA
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VulDB Base Score: 🔒
VulDB Temp Score: 🔒
VulDB Reliability: 🔍

Exploitinginfo

Class: Buffer overflow
CWE: CWE-120 / CWE-119
CAPEC: 🔒
ATT&CK: 🔒

Physical: No
Local: No
Remote: Yes

Availability: 🔒
Status: Not defined
Price Prediction: 🔍
Current Price Estimation: 🔒

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Threat Intelligenceinfo

Interest: 🔍
Active Actors: 🔍
Active APT Groups: 🔍

Countermeasuresinfo

Recommended: Patch
Status: 🔍

0-Day Time: 🔒

Patch: 210f25f

Timelineinfo

07/23/2026 CVE reserved
08/07/2026 +15 days Advisory disclosed
08/07/2026 +0 days VulDB entry created
08/07/2026 +0 days VulDB entry last update

Sourcesinfo

Product: github.com

Advisory: github.com
Status: Confirmed

CVE: CVE-2026-65819 (🔒)
GCVE (CVE): GCVE-0-2026-65819
GCVE (VulDB): GCVE-100-387088

Entryinfo

Created: 08/07/2026 21:55
Changes: 08/07/2026 21:55 (55)
Complete: 🔍
Cache ID: 216::103

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