PatchTheCVECVE-2020-21572: Buffer overflow vulnerability in function src_parser_trans_stage_1_2_3 trgil gilcc before commit 803969389ca9c
CVE-2020-21572 is a high-severity flaw (CVSS 7.5) affecting gilcc. Below: why it ranks where it does, which versions are affected, what to do, and the exact commands.
Buffer overflow vulnerability in function src_parser_trans_stage_1_2_3 trgil gilcc before commit 803969389ca9c06237075a7f8eeb1a19e6651759, allows attackers to cause a denial of service.
Why this priority
- High severity
- Remotely exploitable, no login, no user action
A fixed release or distro patch exists.
Risk facts
| CVSS score | 7.5 (High) |
| Attack vector | Network (remote) |
| Attack complexity | Low |
| Privileges needed | None |
| User interaction | None |
| EPSS exploit chance | 1.3% (top 30%) |
| CISA exploited list | No |
| Weakness | CWE-120 |
| Published | 2021-11-02 |
| 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-2020-21572?
gilcc: upgrade to 2019-12-22. Exact commands for each OS are on this page.
Is CVE-2020-21572 being exploited?
CVE-2020-21572 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-2020-21572 affect?
CVE-2020-21572 affects gilcc. Severity is high (CVSS 7.5). Buffer overflow vulnerability in function src_parser_trans_stage_1_2_3 trgil gilcc before commit 803969389ca9c06237075a7f8eeb1a19e6651759, allows attackers to cause a denial of service.
How urgent is CVE-2020-21572?
Priority 49/100. High severity; Remotely exploitable, no login, no user action