CVSS 3.1
7.5 highCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:HCVE-2022-25304
High (7.5). EPSS 1.6% chance of exploitation in the next 30 days. Fixed in asyncua 0.9.96.
All versions of package opcua; all versions of package asyncua are vulnerable to Denial of Service (DoS) due to a missing limitation on the number of received chunks - per single session or in total for all concurrent sessions. An attacker can exploit this vulnerability by sending an unlimited number of huge chunks (e.g. 2GB each) without sending the Final closing chunk.
Severity
- EPSS
- 1.6% chance of exploitation in the next 30 days; higher than 75% of CVEs (scores of 2026-10-31)
- CWE
- CWE-770
- Published
- Modified
- Record from
- the NVD, synced
Affected
- asyncua_project:asyncua
- opcua_project:opcua
Packages (OSV)
| Advisory | Ecosystem | Package | Affected | Fixed in |
|---|---|---|---|---|
| GHSA-mfpj-3qhm-976m | PyPI | asyncua | <0.9.96 | 0.9.96 |
| GHSA-mfpj-3qhm-976m | PyPI | opcua | <=0.98.13 | no fix published |
| PYSEC-2026-2385 | PyPI | asyncua | <0.9.96 | 0.9.96 |
| PYSEC-2026-888 | PyPI | opcua | <=0.98.13 | no fix published |