NULL pointer dereference in libetpan
Priority MEDIUM 58CWE-476Published · Updated
Key facts
- Attack vector
- Local
- Privileges required
- None
- User interaction
- Required
- Attack complexity
- Low
- Impact type
- Denial of service
- Confidentiality · integrity · availability
- None · None · High
- Fix status
- No fix listed
Attack profile from CVSS 3.1 · CISA ADP. Fix status from CNA. Impact type from CWE-476.
Summary
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 it matters now
Exploitation Proof of concept CISA SSVC · not in CISA KEV
EPSS 0.00558 46th percentileScored 2026-11-07
Public exploit Yes 1 exploit referenceTagged by NVD
Fix No fix listed No fixed version in the sources yet
SSVC decision points
CISA ADP · SSVC 2.0.3
- Exploitation
- Poc
- Automatable
- No
- Technical impact
- Partial
The decision (Track, Attend, Act) also depends on your mission and well-being impact; see CISA's SSVC guide.
Affected products
| Vendor | Product | Affected versions | Fixed in | Status | Source |
|---|---|---|---|---|---|
| — | libetpan | unknown | — | No fix listed | CNA |
- libetpan Vendor— Affected unknown Fixed in — No fix listed CNA
CPE configurations NVD · 1
| CPE | Versions | Role | Vendor |
|---|---|---|---|
| cpe:2.3:a:libetpan_project:libetpan:-:*:*:*:*:*:*:* | not specified by NVD | Vulnerable | Libetpan Project |
- cpe:2.3:a:libetpan_project:libetpan:-:*:*:*:*:*:*:* Versions not specified by NVD Vulnerable ·Libetpan Project
Remediation
No fixed version listed by the sources yet.
Vendor assessments
Timeline
- 2026-10-02 Threatist record created from CVE-2022-4121
- 2026-10-03 Alias added: GHSA-73jp-p4j5-5wmx
References
More Libetpan Project Libetpan vulnerabilities
- TI-2020-12565 LibEtPan through 1.9.4, as used in MailCore 2 through 0.6.3 and other products, has a… CVSS 3.1HIGH 7.4
- TI-2017-06334 A null dereference vulnerability has been found in the MIME handling component of… CVSS 3.0HIGH 7.5
Sources
- CVE-2022-4121 · CVE Program
- CVE-2022-4121 · NVD
- FIRST EPSS
- GHSA-73jp-p4j5-5wmx · GitHub Advisory Database · CC BY 4.0
- CVE-2022-4121 · Red Hat security data · CC BY 4.0
This product uses the NVD API but is not endorsed or certified by the NVD. Sources and licences