PatchTheCVECVE-2021-26473: In VembuBDR before 4.2.0.1 and VembuOffsiteDR before 4.2.0.1 the http API located at /sgwebservice_o.php actio
CVE-2021-26473 is a critical-severity flaw (CVSS 9.8) affecting bdr suite, offsite dr. Below: why it ranks where it does, which versions are affected, what to do, and the exact commands.
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.
Why this priority
- Critical severity
- Remotely exploitable, no login, no user action
A fixed release or distro patch exists.
Risk facts
| CVSS score | 9.8 (Critical) |
| Attack vector | Network (remote) |
| Attack complexity | Low |
| Privileges needed | None |
| User interaction | None |
| EPSS exploit chance | 1.8% (top 22%) |
| CISA exploited list | No |
| Weakness | CWE-434 |
| Published | 2021-06-08 |
| Last modified | 2026-06-17 |
Last updated 2026-06-17 · Sources: CVE Program, NVD, CISA KEV, EPSS and vendor advisories · How we score
Am I affected?
Timeline
- Published CVE record published
- Updated Record last modified
Scores and fixes here are computed automatically from those and other public sources. Confirm with the vendor advisory before changing production systems.
Quick answers
How do I fix CVE-2021-26473?
bdr suite: upgrade to 4.2.0.1; offsite dr: upgrade to 4.2.0.1. Exact commands for each OS are on this page.
Is CVE-2021-26473 being exploited?
CVE-2021-26473 is not on the CISA Known Exploited Vulnerabilities list at the time of the last update. Check again, as this can change.
What does CVE-2021-26473 affect?
CVE-2021-26473 affects bdr suite, offsite dr. Severity is critical (CVSS 9.8). 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 execut
How urgent is CVE-2021-26473?
Priority 59/100. Critical severity; Remotely exploitable, no login, no user action
Software pages
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