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Multiple vulnerabilities have been addressed in the DrayTek VigorSwitch product line by the Nationaal Cyber Security Centrum. These issues include a range of weaknesses such as command injection, null pointer dereference, path traversal, authorization bypass, and buffer overflow. The affected products include DrayTek VigorSwitch FX2120 and potentially other versions, though exact affected versions are not specified. No CVSS score is available for these vulnerabilities. There is no indication of known exploits in the wild. Patch or remediation details are not provided in the source data.

The Nationaal Cyber Security Centrum has fixed multiple vulnerabilities in the DrayTek VigorSwitch product line, including 29 CVEs such as CVE-2026-71915 through CVE-2026-71943. The vulnerabilities cover several CWE categories: CWE-78 (OS Command Injection), CWE-476 (Null Pointer Dereference), CWE-22 (Path Traversal), CWE-862 (Authorization Bypass), and CWE-120 (Buffer Overflow). The advisory does not specify affected versions or patch availability. No known exploits have been reported in the wild.

Detailed information about Kwetsbaarheden verholpen in DrayTek VigorSwitch affecting Nationaal Cyber Security Centrum DrayTek. Get real-time updates, technical 

Kwetsbaarheden verholpen in DrayTek VigorSwitch - Live Threat Intelligence - Threat Radar | OffSeq.com

Reference

Kwetsbaarheden verholpen in DrayTek VigorSwitch

A buffer overflow vulnerability exists in the DrayTek VigorSwitch G2540xs models within the switch_lan_gvrp function. This flaw arises from unsafe copying of the portList field into an undersized buffer. Exploitation requires valid administrative credentials to the device's web management interface and can lead to denial of service or potentially arbitrary command execution.

CVE-2026-71938 is a classic buffer overflow vulnerability in DrayTek VigorSwitch G2540xs devices. The vulnerability occurs due to unsafe copying of the portList field into a buffer that is too small within the switch_lan_gvrp function. A remote attacker with valid administrative credentials to the device's web interface can trigger this vulnerability by supplying crafted input, potentially causing denial of service or arbitrary command execution. The CVSS 4.0 score is 8.6, indicating high severity, with network attack vector, low attack complexity, no user interaction, and requiring high privileges.

Detailed information about CVE-2026-71938: Buffer Copy without Checking Size of Input ('Classic Buffer Overflow') in DrayTek Corporation VigorSwitch G2540xs aff

CVE-2026-71938: Buffer Copy without Checking Size of Input ('Classic Buffer Overflow') in DrayTek Corporation VigorSwitch G2540xs - Live Threat Intelligence - Threat Radar | OffSeq.com

CVE-2026-71938: Buffer Copy without Checking Size of Input ('Classic Buffer Overflow') in DrayTek Corporation VigorSwitch G2540xs


Kwetsbaarheden verholpen in DrayTek VigorSwitchCVE-2026-71915 0 Multiple vulnerabilities have been addressed in the DrayTek VigorSwitch product line by the Nationaal Cyber Security Centrum. These issues include a range of weaknesses such as command injection, null pointer dereference, path traversal, authorization bypass, and buffer overflow. The affected products include DrayTek VigorSwitch FX2120 and potentially other versions, though exact affected versions are not specified. No CVSS score is available for these vulnerabilities. There is no indication of known exploits in the wild. Patch or remediation details are not provided in the source data. HighVulnerability#gcve #csaf #cve-2026-71915 Join the discussion	GCVE Database	08/26/2026, 09:03:54 UTC Added: 08/26/2026, 15:01:54 UTC
CVE-2026-71938: Buffer Copy without Checking Size of Input ('Classic Buffer Overflow') in DrayTek Corporation VigorSwitch G2540xsCVE-2026-71938 0 A buffer overflow vulnerability exists in the DrayTek VigorSwitch G2540xs models within the switch_lan_gvrp function. This flaw arises from unsafe copying of the portList field into an undersized buffer. Exploitation requires valid administrative credentials to the device's web management interface and can lead to denial of service or potentially arbitrary command execution. HighVulnerability#cve #cve-2026-71938 Join the discussion	CVE Database V5	08/24/2026, 17:08:02 UTC Added: 08/24/2026, 17:22:55 UTC

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