MEDIUM
CVE-2026-42800
CWE-476Published: April 30, 2026· Updated: May 5, 2026
5.3
CVSS v3.1
EPSS:0.01%probability of exploitation in 30 daysPercentile:2.0th
Official 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.
Technical Analysis
CVE-2026-42800 can be exploited remotely over the network without requiring physical or adjacent access, significantly expanding the attack surface for threat actors.
The vulnerability requires no privileges and no user interaction, making it a prime target for automated exploitation campaigns and worm-like propagation.
CVSS v3.1 Vector Breakdown
Exploitability
Attack VectorNetwork
Attack ComplexityLow
Privileges Req.None
User InteractionNone
ScopeUnchanged
Impact
ConfidentialityNone
IntegrityNone
AvailabilityLow
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:L
Affected Vendors & Products
asrmicro4 products
asr1901 firmwareasr1901asr1903 firmwareasr1903
Source: NVD CPE · 4 total CPE entries
Exploit & PoC Resources
NO KNOWN EXPLOITNo public exploit confirmed at this time
Exploit-DB
Offensive Security exploit database
GitHub PoC Search
Community PoC repositories
Rapid7 / Metasploit
Metasploit module search
PacketStorm
Security advisories & exploits
NVD Detail
Official NIST entry
MITRE CVE
CVE Program entry
External links open in a new tab. Always verify in a controlled environment before use.
Official Patches & Advisories
All References (1)
→
https://www.asrmicro.com/en/goods/psirt?cid=44Vendor Advisory
Quick Facts
CVE IDCVE-2026-42800
CVSS Score5.3 / 10
SeverityMEDIUM
WeaknessCWE-476
CISA KEVNo
EPSS (30d)0.01%
Affected1 vendor
PublishedApr 30, 2026
Related CVEs (CWE-476)
Recommended Actions
- →Apply vendor patches immediately
- →Monitor CVE-2026-42800 in threat intel feeds
- →Review IDS/IPS signatures for exploitation attempts
Data sourced from NVD (NIST), CISA KEV, and EPSS (FIRST). Analysis generated by CTIWATCH.COM. CVE data is provided under the NVD usage policy.