CVE-2021-26473 json
Unauthenticated arbitrary file upload and command execution in Vembu products
published 5y ago modified 4mo ago also EUVD-2021-13278
- cvss
- 9.8
- version 3.1, CNA
- cisa kev
- Not listed
- not in CISA's catalog
- epss
- 1.8%
- EPSS 1.8% chance of exploitation in 30 days, percentile 78%
- public exploits
- 0
- none known
Summary
In VembuBDR before 4.2.0.1 and VembuOffsiteDR before 4.2.0.1 the http API located at /sgwebservice_o.php action logFilePath allows an attacker to write arbitrary files in the context of the web server process. These files can then be executed remotely by calling the file via the web server.
Patch / fix
- vembu bdr_suite 4.2.0.1
- vembu offsite_dr 4.2.0.1
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Check with FencerExploit prediction
1.76% chance of exploitation in the next 30 days, higher than 78% of all scored CVEs (FIRST EPSS, 2026-11-09).
CVSS scores
| assigned by | version | score | vector |
|---|---|---|---|
| CNA | 3.1 | 9.8 | CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H |
| NVD | 3.1 | 9.8 | CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H |
| NVD | 2.0 | 7.5 | AV:N/AC:L/Au:N/C:P/I:P/A:P |
Classification
- Weakness
-
- CWE-434 Unrestricted Upload of File with Dangerous Type
References
-
csirt.divd.nl
/cases/DIVD-2020-00011/
third-party-advisory
-
csirt.divd.nl
/2021/05/11/Vembu-zero-days/
third-party-advisory
-
wbsec.nl
/vembu
broken-link, third-party-advisory
-
csirt.divd.nl
/cves/CVE-2021-26473/
third-party-advisory
Sources
- CVE List CVE-2021-26473
- NVD CVE-2021-26473
Fencer Intel keeps one entry per vulnerability: the CVE id wins, then GHSA, and records that alias each other are merged, except that two CVEs always keep separate entries. The same data is available as JSON.