Deference after null check in ims_client sip

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Summary

CVECVE-2026-42800
StatePUBLISHED
AssignerASR
Source PriorityCVE Program / NVD first with legacy fallback
Published2026-04-30 10:16:02 UTC
Updated2026-05-05 02:54:21 UTC
DescriptionNULL 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.

Risk And Classification

Primary CVSS: v3.1 5.3 MEDIUM from [email protected]

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:L

EPSS: 0.000130000 probability, percentile 0.020850000 (date 2026-05-05)

Problem Types: CWE-476 | CWE-476 CWE-476 NULL pointer dereference

VersionSourceTypeScoreSeverityVector
3.1[email protected]Primary5.3MEDIUMCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:L
3.168630edc-a58c-4cbd-9b01-0e130455c8aeSecondary7.4HIGHCVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:L/I:L/A:L
3.1CNACVSS7.4HIGHCVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:L/I:L/A:L

CVSS v3.1 Breakdown

Attack Vector
Network
Attack Complexity
Low
Privileges Required
None
User Interaction
None
Scope
Unchanged
Confidentiality
None
Integrity
None
Availability
Low

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:L

NVD Known Affected Configurations (CPE 2.3)

TypeVendorProductVersionUpdateEditionLanguage
Hardware Asrmicro Asr1901 - All All All
Operating System Asrmicro Asr1901 Firmware All All All All
Hardware Asrmicro Asr1903 - All All All
Operating System Asrmicro Asr1903 Firmware All All All All

Vendor Declared Affected Products

SourceVendorProductVersionPlatforms
CNA ASR Lapwing Linux unaffected 2026/4/14 date Linux

References

ReferenceSourceLinkTags
www.asrmicro.com/en/goods/psirt 68630edc-a58c-4cbd-9b01-0e130455c8ae www.asrmicro.com Vendor Advisory
CVE Program record CVE.ORG www.cve.org canonical
NVD vulnerability detail NVD nvd.nist.gov canonical, analysis
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