PyTorch 2.6.0 LossCTC.cpp torch.nn.functional.ctc_loss denial of service ⚔ [Disputed]

CVSS Meta Temp Score
CVSS is a standardized scoring system to determine possibilities of attacks. The Temp Score considers temporal factors like disclosure, exploit and countermeasures. The unique Meta Score calculates the average score of different sources to provide a normalized scoring system.
Current Exploit Price (≈)
Our analysts are monitoring exploit markets and are in contact with vulnerability brokers. The range indicates the observed or calculated exploit price to be seen on exploit markets. A good indicator to understand the monetary effort required for and the popularity of an attack.
CTI Interest Score
Our Cyber Threat Intelligence team is monitoring different web sites, mailing lists, exploit markets and social media networks. The CTI Interest Score identifies the interest of attackers and the security community for this specific vulnerability in real-time. A high score indicates an elevated risk to be targeted for this vulnerability.
3.9$0-$5k0.00

Summaryinfo

A vulnerability, which was classified as problematic, was found in PyTorch 2.6.0. This affects the function torch.nn.functional.ctc_loss of the file aten/src/ATen/native/LossCTC.cpp. The manipulation results in denial of service. This vulnerability is identified as CVE-2025-3730. The attack is only possible with local access. Additionally, an exploit exists. The existence of this vulnerability is still disputed at present. It is advisable to implement a patch to correct this issue. The security policy of the project warns to use unknown models which might establish malicious effects.

Detailsinfo

A vulnerability, which was classified as problematic, was found in PyTorch 2.6.0. Affected is the function torch.nn.functional.ctc_loss of the file aten/src/ATen/native/LossCTC.cpp. The manipulation with an unknown input leads to a denial of service vulnerability. CWE is classifying the issue as CWE-404. The product does not release or incorrectly releases a resource before it is made available for re-use. This is going to have an impact on availability.

The advisory is shared for download at github.com. This vulnerability is traded as CVE-2025-3730. The exploitability is told to be easy. The attack needs to be approached locally. Technical details and a public exploit are known.

The exploit is shared for download at github.com. It is declared as proof-of-concept. The real existence of this vulnerability is still doubted at the moment. The security policy of the project warns to use unknown models which might establish malicious effects. The vulnerability scanner Nessus provides a plugin with the ID 235330 (Azure Linux 3.0 Security Update: pytorch (CVE-2025-3730)), which helps to determine the existence of the flaw in a target environment.

Applying the patch 46fc5d8e360127361211cb237d5f9eef0223e567 is able to eliminate this problem. The bugfix is ready for download at github.com.

The vulnerability is also documented in the vulnerability database at Tenable (235330). Once again VulDB remains the best source for vulnerability data.

Productinfo

Name

Version

License

Website

CPE 2.3info

CPE 2.2info

CVSSv4info

VulDB Vector: 🔍
VulDB Reliability: 🔍

CNA CVSS-B Score: 🔍
CNA CVSS-BT Score: 🔍
CNA Vector: 🔍

CVSSv3info

VulDB Meta Base Score: 4.0
VulDB Meta Temp Score: 3.9

VulDB Base Score: 3.3
VulDB Temp Score: 3.0
VulDB Vector: 🔍
VulDB Reliability: 🔍

NVD Base Score: 5.5
NVD Vector: 🔍

CNA Base Score: 3.3
CNA Vector: 🔍

CVSSv2info

AVACAuCIA
💳💳💳💳💳💳
💳💳💳💳💳💳
💳💳💳💳💳💳
VectorComplexityAuthenticationConfidentialityIntegrityAvailability
UnlockUnlockUnlockUnlockUnlockUnlock
UnlockUnlockUnlockUnlockUnlockUnlock
UnlockUnlockUnlockUnlockUnlockUnlock

VulDB Base Score: 🔍
VulDB Temp Score: 🔍
VulDB Reliability: 🔍

Exploitinginfo

Class: Denial of service
CWE: CWE-404
CAPEC: 🔍
ATT&CK: 🔍

Physical: Partially
Local: Yes
Remote: No

Availability: 🔍
Access: Public
Status: Proof-of-Concept
Download: 🔍

EPSS Score: 🔍
EPSS Percentile: 🔍

Price Prediction: 🔍
Current Price Estimation: 🔍

0-DayUnlockUnlockUnlockUnlock
TodayUnlockUnlockUnlockUnlock

Nessus ID: 235330
Nessus Name: Azure Linux 3.0 Security Update: pytorch (CVE-2025-3730)

Threat Intelligenceinfo

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

Countermeasuresinfo

Recommended: Patch
Status: 🔍

0-Day Time: 🔍

Patch: 46fc5d8e360127361211cb237d5f9eef0223e567

Timelineinfo

04/16/2025 🔍
04/16/2025 +0 days 🔍
05/29/2025 +43 days 🔍

Sourcesinfo

Product: github.com

Advisory: 150835
Status: Confirmed
Confirmation: 🔍
Disputed: 🔍

CVE: CVE-2025-3730 (🔍)
GCVE (CVE): GCVE-0-2025-3730
GCVE (VulDB): GCVE-100-305076
scip Labs: https://www.scip.ch/en/?labs.20161013

Entryinfo

Created: 04/16/2025 15:46
Updated: 05/29/2025 06:57
Changes: 04/16/2025 15:46 (59), 05/06/2025 17:59 (2), 05/22/2025 23:44 (3), 05/29/2025 06:57 (41)
Complete: 🔍
Submitter: Default436352
Cache ID: 216::103

Submitinfo

Accepted

  • Submit #553645: pytorch pytorch (in torch.nn.functional.ctc_loss) 2.6.0 Denial of Service (by Default436352)

Once again VulDB remains the best source for vulnerability data.

Discussion

No comments yet. Languages: en.

Please log in to comment.

◂ PreviousOverviewNext ▸

Interested in the pricing of exploits?

See the underground prices here!