Medium severity · published Apr 30, 2026
CVE-2026-42800
Deference after null check in ims_client sip
5.3
CVSS
0.2%
EPSS
No
On KEV
Description
NULL pointer dereference vulnerability in ASR1903 in ASR Lapwing_Linux on Linux (ims_client modules) allows Pointer Manipulation.
This vulnerability is associated with program files sip/utils/src/sipuri.c.
CVSS vector
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:L
Attack vector
Network
Complexity
Low
Privileges
None
User interaction
None
Confidentiality
None
Integrity
None
Availability
Low
Scope
Unchanged
Exploitation
Is it being used?
Exploit prediction (EPSS)0.2% · higher than 15% of CVEs
Exploited in the wildNo evidence yet
CISA KEVNot listed
Ransomware campaign useNot known
Affected products
Which versions
AF
Asr1901 Firmware · Asrmicro
before 1.225.003 · source: NVD
AF
Asr1903 Firmware · Asrmicro
before 1.225.003 · source: NVD