PatchTheCVECVE-2021-38477: There are multiple API function codes that permit reading and writing data to or from files and directories, w
CVE-2021-38477 is a critical-severity flaw (CVSS 9.8) affecting versiondog. Below: why it ranks where it does, which versions are affected, what to do, and the exact commands.
There are multiple API function codes that permit reading and writing data to or from files and directories, which could lead to the manipulation and/or the deletion of files.
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 | 1.2% (top 33%) |
| CISA exploited list | No |
| Weakness | CWE-73 |
| Published | 2021-10-22 |
| 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-2021-38477?
versiondog: upgrade to 8.0.0. Exact commands for each OS are on this page.
Is CVE-2021-38477 being exploited?
CVE-2021-38477 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-2021-38477 affect?
CVE-2021-38477 affects versiondog. Severity is critical (CVSS 9.8). There are multiple API function codes that permit reading and writing data to or from files and directories, which could lead to the manipulation and/or the deletion of files.
How urgent is CVE-2021-38477?
Priority 56/100. Critical severity; Remotely exploitable, no login, no user action
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- CVE-2021-38473 HIGH 8.0 UPGRADE The affected product’s code base doesn’t properly control arguments for specific functions, which could lead t
- CVE-2021-38471 CRITICAL 9.1 UPGRADE There are multiple API function codes that permit data writing to any file, which may allow an attacker to mod