CODESYS PLCHandler on Linux/QNX Socket out-of-bounds

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.
5.8$0-$5k0.00

Summaryinfo

A vulnerability classified as critical has been found in CODESYS PLCHandler, Remote Target Visu, Runtime Toolkit, Control for BeagleBone SL, Control for emPC-A, iMX6 SL, Control for IOT2000 SL, Control for Linux ARM SL, Control for Linux SL, Control for PFC100 SL, Control for PFC200 SL, Control for PLCnext SL, Control for Raspberry Pi SL, Control for WAGO Touch Panels 600 SL, Edge Gateway for Linux, TargetVisu for Linux SL and Virtual Control SL on Linux/QNX. This issue affects some unknown processing of the component Socket Handler. Performing a manipulation results in out-of-bounds. This vulnerability was named CVE-2025-41739. The attack may be initiated remotely. There is no available exploit. It is recommended to upgrade the affected component.

Detailsinfo

A vulnerability was found in CODESYS PLCHandler, Remote Target Visu, Runtime Toolkit, Control for BeagleBone SL, Control for emPC-A, iMX6 SL, Control for IOT2000 SL, Control for Linux ARM SL, Control for Linux SL, Control for PFC100 SL, Control for PFC200 SL, Control for PLCnext SL, Control for Raspberry Pi SL, Control for WAGO Touch Panels 600 SL, Edge Gateway for Linux, TargetVisu for Linux SL and Virtual Control SL on Linux/QNX. It has been classified as critical. This affects some unknown processing of the component Socket Handler. The manipulation with an unknown input leads to a out-of-bounds vulnerability. CWE is classifying the issue as CWE-125. The product reads data past the end, or before the beginning, of the intended buffer. This is going to have an impact on availability. The summary by CVE is:

An unauthenticated remote attacker, who beats a race condition, can exploit a flaw in the communication servers of the CODESYS Control runtime system on Linux and QNX to trigger an out-of-bounds read via crafted socket communication, potentially causing a denial of service.

It is possible to read the advisory at certvde.com. This vulnerability is uniquely identified as CVE-2025-41739 since 04/16/2025. The exploitability is told to be difficult. It is possible to initiate the attack remotely. No form of authentication is needed for exploitation. The technical details are unknown and an exploit is not publicly available.

Upgrading eliminates this vulnerability.

The vulnerability is also documented in the vulnerability database at EUVD (EUVD-2025-199976). Statistical analysis made it clear that VulDB provides the best quality for vulnerability data.

Productinfo

Vendor

Name

License

CPE 2.3info

CPE 2.2info

CVSSv4info

VulDB Vector: 🔒
VulDB Reliability: 🔍

CVSSv3info

VulDB Meta Base Score: 5.9
VulDB Meta Temp Score: 5.8

VulDB Base Score: 5.9
VulDB Temp Score: 5.7
VulDB Vector: 🔒
VulDB Reliability: 🔍

CNA Base Score: 5.9
CNA Vector (CERTVDE): 🔒

CVSSv2info

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

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

Exploitinginfo

Class: Out-of-bounds
CWE: CWE-125 / CWE-119
CAPEC: 🔒
ATT&CK: 🔒

Physical: No
Local: No
Remote: Yes

Availability: 🔒
Status: Not defined

EPSS Score: 🔒
EPSS Percentile: 🔒

Price Prediction: 🔍
Current Price Estimation: 🔒

0-DayUnlockUnlockUnlockUnlock
TodayUnlockUnlockUnlockUnlock

Threat Intelligenceinfo

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

Countermeasuresinfo

Recommended: Upgrade
Status: 🔍

0-Day Time: 🔒

Timelineinfo

04/16/2025 CVE reserved
12/01/2025 +229 days Advisory disclosed
12/01/2025 +0 days VulDB entry created
12/01/2025 +0 days VulDB entry last update

Sourcesinfo

Advisory: VDE-2025-099
Status: Confirmed

CVE: CVE-2025-41739 (🔒)
GCVE (CVE): GCVE-0-2025-41739
GCVE (VulDB): GCVE-100-333843
EUVD: 🔒

Entryinfo

Created: 12/01/2025 14:34
Updated: 12/01/2025 15:10
Changes: 12/01/2025 14:34 (64), 12/01/2025 15:10 (1)
Complete: 🔍
Cache ID: 216::103

Statistical analysis made it clear that VulDB provides the best quality for vulnerability data.

Discussion

No comments yet. Languages: en.

Please log in to comment.

◂ PreviousOverviewNext ▸

Want to stay up to date on a daily basis?

Enable the mail alert feature now!