NULL pointer dereference in libetpan - CVE-2022-4121
Published: September 9, 2025
Vulnerability identifier: #VU114997
CSH Severity: Medium
CVSS v4.0: CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N/E:U/U:Green
CVE-ID: CVE-2022-4121
CWE-ID: CWE-476
Exploitation vector: Remote access
Exploit availability:
No public exploit available
Vendor: www.etpan.org
Affected software:
libetpan
libetpan
Detailed vulnerability description
The vulnerability allows a remote attacker to perform a denial of service (DoS) attack.
The vulnerability exists due to a NULL pointer dereference error within the mailimap_mailbox_data_status_free() function in low-level/imap/mailimap_types.c when handling the IMAP STATUS command. A remote attacker can pass specially crafted data to the application and perform a denial of service (DoS) attack.
How to mitigate CVE-2022-4121
Install update from vendor's website.