CVE-2023-26151

Name: CVE-2023-26151
Creator: NVD / NIST
Published: 2023-10-03T05:15:50.507+00:00
License: https://creativecommons.org/publicdomain/zero/1.0/

HIGHCVSS 7.5/10EPSS 1.03%

Last modified Jun 17, 2026

CVE-2023-26151 is a high-severity vulnerability rated 7.5/10 on the CVSS scale. Versions of the package asyncua before 0.9.96 are vulnerable to Denial of Service (DoS) such that an attacker can send a malformed packet and as a result, the server will enter into an infinite loop and consume excessive memory.. EPSS estimates a 1.03% chance of exploitation in the next 30 days.

Description

Versions of the package asyncua before 0.9.96 are vulnerable to Denial of Service (DoS) such that an attacker can send a malformed packet and as a result, the server will enter into an infinite loop and consume excessive memory.

Metrics

CVSS 3.1

7.5/10

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

EPSS Probability

1.03%

59.3th percentile

Probability of exploitation in the next 30 days. Learn more

Weakness Enumeration

Affected Software

Vendor	Product	Versions
Freeopcua	Opcua-Asyncio	< 0.9.96

References

https://gist.github.com/artfire52/1540b234350795e0ecb4d672608dbec8Exploit, Third Party Advisory
https://github.com/FreeOpcUa/opcua-asyncio/commit/f6603daa34a93a658f0e176cb0b9ee5a6643b262Patch
https://github.com/FreeOpcUa/opcua-asyncio/issues/1013Exploit, Issue Tracking, Third Party Advisory
https://github.com/FreeOpcUa/opcua-asyncio/pull/1039Patch
https://github.com/FreeOpcUa/opcua-asyncio/releases/tag/v0.9.96Product, Release Notes
https://security.snyk.io/vuln/SNYK-PYTHON-ASYNCUA-5673709Exploit, Patch, Third Party Advisory
https://gist.github.com/artfire52/1540b234350795e0ecb4d672608dbec8Exploit, Third Party Advisory
https://github.com/FreeOpcUa/opcua-asyncio/commit/f6603daa34a93a658f0e176cb0b9ee5a6643b262Patch
https://github.com/FreeOpcUa/opcua-asyncio/issues/1013Exploit, Issue Tracking, Third Party Advisory
https://github.com/FreeOpcUa/opcua-asyncio/pull/1039Patch
https://github.com/FreeOpcUa/opcua-asyncio/releases/tag/v0.9.96Product, Release Notes
https://security.snyk.io/vuln/SNYK-PYTHON-ASYNCUA-5673709Exploit, Patch, Third Party Advisory

Timeline

Published: Oct 3, 2023
Last Modified: Jun 17, 2026
Status: Modified

Frequently Asked Questions

What is CVE-2023-26151?

How severe is CVE-2023-26151?

CVE-2023-26151 has a CVSS score of 7.5/10 (HIGH severity). The EPSS model estimates a 1.03% probability of exploitation in the next 30 days.

How do I fix CVE-2023-26151?

Check the vendor references and advisories linked above for patched versions and mitigation guidance. You can also run a Strix scan to test if your systems are affected.

Are you affected by CVE-2023-26151?

Run a free Strix scan to check your systems for this vulnerability.

Scan your code now

Source: NVD / NIST