PatchTheCVECVE-2021-38423: All versions of GurumDDS improperly calculate the size to be used when allocating the buffer, which may result
CVE-2021-38423 is a medium-severity flaw (CVSS 6.6) affecting gurumdds. Below: why it ranks where it does, which versions are affected, what to do, and the exact commands.
All versions of GurumDDS improperly calculate the size to be used when allocating the buffer, which may result in a buffer overflow.
Why this priority
- No elevated risk signals yet
No fix is published yet: follow the downgrade or mitigation steps.
Risk facts
| CVSS score | 6.6 (Medium) |
| Attack vector | Local |
| Attack complexity | Low |
| Privileges needed | Low |
| User interaction | None |
| EPSS exploit chance | 1.3% (top 30%) |
| CISA exploited list | No |
| Weakness | CWE-131 |
| Published | 2022-05-05 |
| 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-2021-38423?
gurumdds: mitigate or apply the listed mitigation. Exact commands for each OS are on this page.
Is CVE-2021-38423 being exploited?
CVE-2021-38423 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-2021-38423 affect?
CVE-2021-38423 affects gurumdds. Severity is medium (CVSS 6.6). All versions of GurumDDS improperly calculate the size to be used when allocating the buffer, which may result in a buffer overflow.
How urgent is CVE-2021-38423?
Priority 41/100. No elevated risk signals yet.
Related CVEs
- CVE-2021-38439 HIGH 8.6 MITIGATE All versions of GurumDDS are vulnerable to heap-based buffer overflow, which may cause a denial-of-service con