PatchTheCVECVE-2022-4121: In libetpan a null pointer dereference in mailimap_mailbox_data_status_free in low-level/imap/mailimap_types.c
CVE-2022-4121 is a medium-severity flaw (CVSS 5.5) affecting libetpan. Below: why it ranks where it does, which versions are affected, what to do, and the exact commands.
In libetpan a null pointer dereference in mailimap_mailbox_data_status_free in low-level/imap/mailimap_types.c was found that could lead to a remote denial of service or other potential consequences.
Why this priority
- Public exploit reference
No fix is published yet: follow the downgrade or mitigation steps.
Risk facts
| CVSS score | 5.5 (Medium) |
| Attack vector | Local |
| Attack complexity | Low |
| Privileges needed | None |
| User interaction | Required |
| EPSS exploit chance | 0.6% (top 54%) |
| CISA exploited list | No |
| Weakness | CWE-476 |
| Published | 2023-01-17 |
| 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-2022-4121?
libetpan: mitigate or apply the listed mitigation. Exact commands for each OS are on this page.
Is CVE-2022-4121 being exploited?
CVE-2022-4121 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-2022-4121 affect?
CVE-2022-4121 affects libetpan. Severity is medium (CVSS 5.5). In libetpan a null pointer dereference in mailimap_mailbox_data_status_free in low-level/imap/mailimap_types.c was found that could lead to a remote denial of service or other potential consequences.
How urgent is CVE-2022-4121?
Priority 36/100. Public exploit reference