CVE-2021-26471 json
Unauthenticated remote command execution in Vembu products
published 5y ago modified 4mo ago also EUVD-2021-13276
- cvss
- 9.8
- version 3.1, CNA
- cisa kev
- Not listed
- not in CISA's catalog
- epss
- 2.3%
- EPSS 2.3% chance of exploitation in 30 days, percentile 83%
- 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 accepts a command argument. Using this command argument an unauthenticated attacker can execute arbitrary shell commands.
Patch / fix
- vembu bdr_suite 4.2.0.1
- vembu offsite_dr 4.2.0.1
Is CVE-2021-26471 in your stack? Fencer shows which of your repositories are affected as soon as an advisory lands, and opens the fix as a pull request.
Check with FencerExploit prediction
2.26% chance of exploitation in the next 30 days, higher than 83% 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 |
References
-
csirt.divd.nl
/cves/CVE-2021-26471/
third-party-advisory
-
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
Sources
- CVE List CVE-2021-26471
- NVD CVE-2021-26471
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.