CVE-2024-7596VulnerabilityPublished 5 Feb 2025Updated 3 Nov 2025

Proposed Generic UDP Encapsulation (GUE) (IETF Draft) do not validate or verify the source of a network packet

Source GCVE Database

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Mentioned vulnerabilities

CVE-2020-10136

Authoritative record:CVE-2024-7596· Medium 5.3

Not known to be exploited · CVSS 5.3 Medium.

Data as of 30 Oct 2026, 01:10 UTC

CVSS 3.1 base score

5.3Medium

How severe the flaw is on the 0–10 CVSS scale.

Thin evidence

One scorer or none

CVSS scores by source
CISA-ADP	CVSS 3.1	5.3

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:L

Attack Vector: Network
Attack Complexity: Low
Privileges Required: None
User Interaction: None
Scope: Unchanged
Confidentiality: None
Integrity: None
Availability: Low

Bold values are the worst case: easiest to exploit or largest impact.

Attack Vector: Network: The vulnerable component is bound to the network stack and the set of possible attackers extends beyond the other options listed, up to and including the entire Internet. Such a vulnerability is often termed 'remotely exploitable' and can be thought of as an attack being exploitable at the protocol level one or more network hops away (e.g., across one or more routers).
Attack Complexity: Low: Specialized access conditions or extenuating circumstances do not exist. An attacker can expect repeatable success against the vulnerable component.
Privileges Required: None: The attacker is unauthorized prior to attack, and therefore does not require any access to settings or files to carry out an attack.
User Interaction: None: The vulnerable system can be exploited without any interaction from any user.
Scope: Unchanged: An exploited vulnerability can only affect resources managed by the same security authority. In this case, the vulnerable component and the impacted component are either the same, or both are managed by the same security authority.
Confidentiality: None: There is no loss of confidentiality within the impacted component.
Integrity: None: There is no loss of integrity within the impacted component.
Availability: Low: Performance is reduced or there are interruptions in resource availability. Even if repeated exploitation of the vulnerability is possible, the attacker does not have the ability to completely deny service to legitimate users. The resources in the impacted component are either partially available all of the time, or fully available only some of the time, but overall there is no direct, serious consequence to the impacted component.

Definitions: FIRST CVSS v3.1 specification.

Exploitation evidence

Disclosed: evidence found.
CVE published 5 Feb 2025
Detectable: no evidence on record.
No public nuclei template indexed
Weaponized: no evidence on record.
No public exploit code indexed in Metasploit or Exploit-DB
Exploited in the wildExploited: no evidence on record.
Not in CISA KEV and no source reports exploitation
Observed by OffSeq MirageSeen by Mirage: no evidence on record.
No attack traffic recorded by OffSeq Mirage sensors

A missing step is not evidence of safety. Sources: cve.org (opens in a new tab), the Metasploit, Exploit-DB and nuclei-templates index as of 29 Oct 2026.

Disclosed: The CVE record is public on cve.org. Its publication is t = 0.
Detectable: A public nuclei template can find exposed instances, for defenders and attackers alike.
Weaponized: A Metasploit exploit module or Exploit-DB entry exists (Metasploit scanner modules do not count), or CISA SSVC or the CVSS exploit maturity reports a public proof of concept.
Exploited in the wild: CISA KEV lists it, CISA SSVC rates exploitation active, or a source reports attacks.
Observed by OffSeq Mirage: OffSeq Mirage honeypot sensors recorded attack traffic for this CVE, or found exposed hosts without attack traffic.

Moments are spaced evenly, not to scale; a dashed line marks a gap of six months or more. Deltas count from t = 0. Sources that give only a date (CISA KEV, Exploit-DB, or a time of exactly 00:00Z) read “same day” rather than hours. Metasploit modules carry the flaw’s disclosure date, not their release date, and nuclei templates carry no date, so both appear above but not on the timeline.

ghsa-jff7-8p33-28j3

What to do

AI-suggested

Since this is a draft specification issue, mitigation may require protocol design changes or implementation of source validation mechanisms in affected software. Monitor vendor advisories or protocol updates for remediation guidance. No immediate vendor advisory states that no action is required or that the issue is mitigated.

Description

The Proposed Generic UDP Encapsulation (GUE) IETF draft does not validate or verify the source of network packets. This flaw allows an attacker to spoof and route arbitrary traffic through an exposed network interface, potentially leading to spoofing, access control bypass, and other unexpected network behaviors. The vulnerability is similar in nature to CVE-2020-10136. It has a medium severity rating with a CVSS score of 6.5.

Impact

An attacker can exploit the lack of source validation in GUE to spoof network packets and route arbitrary traffic through exposed interfaces. This can lead to unauthorized access, bypass of network access controls, and potentially other unexpected network behaviors. The impact includes limited confidentiality, integrity, and availability consequences as indicated by the CVSS vector (C:L/I:L/A:L).

Summary

The Proposed Generic UDP Encapsulation (GUE) IETF draft specification lacks source validation or verification for network packets. This deficiency enables attackers to spoof packet sources and route arbitrary traffic via exposed network interfaces. Such behavior can result in spoofing attacks, bypassing access controls, and causing other unintended network effects. The vulnerability is analogous to CVE-2020-10136, indicating a known class of risk associated with UDP encapsulation protocols that do not authenticate packet origins. No affected versions or patches are specified, and no known exploits are reported in the wild as of the published date.

References

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