ASR Lapwing_Linux ASR1903 sip/utils/src/sipuri.c null pointer dereference

CVSS Meta Temp Score
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CTI Interest Score
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6.7$0-$5k0.00

Summaryinfo

A vulnerability classified as problematic has been found in ASR Lapwing_Linux. Affected by this vulnerability is an unknown functionality of the file sip/utils/src/sipuri.c of the component ASR1903. Performing a manipulation results in null pointer dereference. This vulnerability is identified as CVE-2026-42800. The attack can be initiated remotely. There is not any exploit available. It is recommended to upgrade the affected component.

Detailsinfo

A vulnerability classified as critical has been found in ASR Lapwing_Linux (version now known). This affects some unknown processing of the file sip/utils/src/sipuri.c of the component ASR1903. The manipulation with an unknown input leads to a null pointer dereference vulnerability. CWE is classifying the issue as CWE-476. A NULL pointer dereference occurs when the application dereferences a pointer that it expects to be valid, but is NULL, typically causing a crash or exit. This is going to have an impact on confidentiality, integrity, and availability. The summary by CVE is:

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.

The advisory is shared at asrmicro.com. This vulnerability is uniquely identified as CVE-2026-42800 since 04/30/2026. The exploitability is told to be easy. It is possible to initiate the attack remotely. Technical details are known, but no exploit is available.

Upgrading eliminates this vulnerability.

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Productinfo

Vendor

Name

CPE 2.3info

CPE 2.2info

CVSSv4info

VulDB Vector: 🔒
VulDB Reliability: 🔍

CVSSv3info

VulDB Meta Base Score: 6.8
VulDB Meta Temp Score: 6.7

VulDB Base Score: 6.3
VulDB Temp Score: 6.0
VulDB Vector: 🔒
VulDB Reliability: 🔍

CNA Base Score: 7.4
CNA Vector (ASR): 🔒

CVSSv2info

AVACAuCIA
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VulDB Base Score: 🔒
VulDB Temp Score: 🔒
VulDB Reliability: 🔍

Exploitinginfo

Class: Null pointer dereference
CWE: CWE-476 / CWE-404
CAPEC: 🔒
ATT&CK: 🔒

Physical: No
Local: No
Remote: Yes

Availability: 🔒
Status: Not defined

EPSS Score: 🔒
EPSS Percentile: 🔒

Price Prediction: 🔍
Current Price Estimation: 🔒

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Threat Intelligenceinfo

Interest: 🔍
Active Actors: 🔍
Active APT Groups: 🔍

Countermeasuresinfo

Recommended: Upgrade
Status: 🔍

0-Day Time: 🔒

Timelineinfo

04/14/2026 Countermeasure disclosed
04/30/2026 +16 days Advisory disclosed
04/30/2026 +0 days CVE reserved
04/30/2026 +0 days VulDB entry created
04/30/2026 +0 days VulDB entry last update

Sourcesinfo

Advisory: asrmicro.com
Status: Confirmed

CVE: CVE-2026-42800 (🔒)
GCVE (CVE): GCVE-0-2026-42800
GCVE (VulDB): GCVE-100-360261

Entryinfo

Created: 04/30/2026 12:13
Changes: 04/30/2026 12:13 (64)
Complete: 🔍
Cache ID: 216::103

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