CVE-2023-26151
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.
Does this matter?
High impact if exploited, but EPSS currently rates exploitation as unlikely (1.18%). Schedule it in the normal patch cycle and watch for a rise in EPSS or a public exploit.
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.
- CVSS 3.1
- 7.5 HIGHCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
- EPSS
- 1.18% probability · 67th percentile
- Public exploits
- None in Exploit-DB
- CISA KEV
- Not listed
- Weakness
- CWE-400, CWE-835
- Affected
- freeopcua/opcua-asyncio
- Source
- report@snyk.io
EPSS 1.2% since 26 October 2026; no change recorded yet. Points are recorded when the score first appears and whenever it moves by a percentage point or more.
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
Source: NVD record, EPSS from FIRST.org, KEV from CISA, exploits from Exploit-DB. Refreshed daily. Download this record as JSON.