CVE-2023-34939
9.8
CRITICAL · CVSS 3.1 · EPSS 5% (pctl 92)
In your normal cycle
Critical by CVSS (9.8), but no sign of active exploitation.
Description
Onlyoffice Community Server before v12.5.2 was discovered to contain a remote code execution (RCE) vulnerability via the component UploadProgress.ashx.
Scoring
| CVSS | 9.8 (CRITICAL, v3.1) |
|---|---|
| Vector | CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H |
| EPSS | 5.03% — more likely to be exploited than 92% of all CVEs |
| Weakness | CWE-22 |
| On CISA KEV | no |
| Public exploit | none known |
| Published | 2023-06-22 |
| Last modified | 2026-06-17 |
Affected (1)
| Vendor | Product |
|---|---|
| onlyoffice | onlyoffice |
References
- https://github.com/ONLYOFFICE/CommunityServer/blob/master/CHANGELOG.md#version-1252
- https://github.com/firsov/onlyoffice
- https://github.com/firsov/onlyoffice/blob/main/CVE-2023-34939-PoC.md
- https://github.com/ONLYOFFICE/CommunityServer/blob/master/CHANGELOG.md#version-1252
- https://github.com/firsov/onlyoffice
- https://github.com/firsov/onlyoffice/blob/main/CVE-2023-34939-PoC.md
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