PatchTheCVECVE-2021-3200: Buffer overflow vulnerability in libsolv 2020-12-13 via the Solver * testcase_read(Pool *pool, FILE *fp, const
CVE-2021-3200 is a low-severity flaw (CVSS 3.3) affecting libsolv, communications cloud native core policy. Below: why it ranks where it does, which versions are affected, what to do, and the exact commands.
Buffer overflow vulnerability in libsolv 2020-12-13 via the Solver * testcase_read(Pool *pool, FILE *fp, const char *testcase, Queue *job, char **resultp, int *resultflagsp function at src/testcase.c: line 2334, which could cause a denial of service
Why this priority
- Public exploit reference
A fixed release or distro patch exists.
Risk facts
| CVSS score | 3.3 (Low) |
| Attack vector | Local |
| Attack complexity | Low |
| Privileges needed | None |
| User interaction | Required |
| EPSS exploit chance | 1.3% (top 29%) |
| CISA exploited list | No |
| Weakness | CWE-120 |
| Published | 2021-05-18 |
| 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-2021-3200?
libsolv: upgrade to 0.7.17; communications cloud native core policy: downgrade or apply the listed mitigation. Exact commands for each OS are on this page.
Is CVE-2021-3200 being exploited?
CVE-2021-3200 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-2021-3200 affect?
CVE-2021-3200 affects libsolv, communications cloud native core policy. Severity is low (CVSS 3.3). Buffer overflow vulnerability in libsolv 2020-12-13 via the Solver * testcase_read(Pool *pool, FILE *fp, const char *testcase, Queue *job, char **resultp, int *resultflagsp function at src/testcase.c: line 2334, which could cause a denial o
How urgent is CVE-2021-3200?
Priority 34/100. Public exploit reference
Related CVEs
- CVE-2026-48864 HIGH 7.8 DOWNGRADE MITIGATE A flaw was found in libsolv
- CVE-2026-9149 MEDIUM 6.5 UPGRADE MITIGATE A flaw was found in libsolv
- CVE-2021-44568 MEDIUM 6.5 UPGRADE Two heap-overflow vulnerabilities exist in openSUSE/libsolv libsolv through 13 Dec 2020 in the decisionmap var
- CVE-2021-33938 HIGH 7.5 UPGRADE Buffer overflow vulnerability in function prune_to_recommended in src/policy.c in libsolv before 0.7.17 allows
- CVE-2021-33930 HIGH 7.5 UPGRADE Buffer overflow vulnerability in function pool_installable_whatprovides in src/repo.h in libsolv before 0.7.17