Memory disclosure via out-of-bounds firmware read
Published Apr 30, 2026 · Updated Apr 30, 2026
Out-of-bounds read in ASR Kestrel nr_fw before 2026/02/10 allows remote authenticated users to access memory beyond a buffer. NrPwrCtrl.c in the modem firmware performs a read outside the intended buffer, but ASR has not disclosed the input or index that reaches it. Network access with low privileges is required; the published assessment limits the resulting confidentiality, integrity, and availability effects to low impact.
Summary
What happened
Out-of-bounds read in ASR Kestrel nr_fw before 2026/02/10 allows remote authenticated users to access memory beyond a buffer. NrPwrCtrl.c in the modem firmware performs a read outside the intended buffer, but ASR has not disclosed the input or index that reaches it. Network access with low privileges is required; the published assessment limits the resulting confidentiality, integrity, and availability effects to low impact.
The record
- CVE
- CVE-2026-42799
- Published
- Apr 30, 2026
- Updated
- Apr 30, 2026
- Vendor
- ASR Microelectronics Co., Ltd.
- Product
- Kestrel
- Classifications
- CWE-125, CAPEC-100
- Attack vector
- network
- Privileges
- authenticated
Timeline
How it unfolded
- Apr 30, 2026CVE publishedPublication date reported by the CVE source.
- Apr 30, 2026Record updatedLatest update available in the CVE record.
Exploitability
Present is not the same as exploitable
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Is a vulnerable build present?
Compare these published version ranges with your installed build and any vendor patches.
- Affected versionversion=0 <2026/02/10
What conditions does exploitation require?
What is affected?
Published CVSS scores
CVSS describes severity. EPSS estimates exploitation probability.
Attacks
What attackers are doing with it
Daily unique IPs observed by Shadowserver honeypots for known exploited vulnerabilities (KEVs). Missing observations do not establish an absence of attacks.
Public exploit references
No public exploit references are available in this record.
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Technologies
Your stack
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Your stack
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