🔐 CVE Alert

CVE-2026-71932

MEDIUM 4.9

DrayTek VigorSwitch Multiple Models Path Traversal via getSyslogFile

CVSS Score
4.9
EPSS Score
0.0%
EPSS Percentile
0th

Multiple DrayTek VigorSwitch models contain a directory traversal vulnerability in the getSyslogFile function. The vulnerability is caused by insufficient validation of the option field. A remote attacker can trigger this vulnerability via crafted input containing path traversal sequences to access arbitrary files on the device. Exploitation requires valid administrative credentials for the device's web management interface.

CWE CWE-22
Vendor draytek corporation
Product vigorswitch g2540xs
Published Aug 24, 2026
Last Updated Aug 24, 2026
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CVSS v3 Breakdown

CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:H/I:N/A:N
Attack Vector
Network
Attack Complexity
Low
Privileges Required
High
User Interaction
None
Scope
Unchanged
Confidentiality
High
Integrity
None
Availability
None

Affected Versions

DrayTek Corporation / VigorSwitch G2540xs
0 < 3.9.10
DrayTek Corporation / VigorSwitch P2540xs
0 < 3.9.10
DrayTek Corporation / VigorSwitch FX2120
0 < 3.9.10
DrayTek Corporation / VigorSwitch G2282x
0 < 2.10.6
DrayTek Corporation / VigorSwitch P2282x
0 < 2.10.6
DrayTek Corporation / VigorSwitch Q2300x
0 < 2.10.7
DrayTek Corporation / VigorSwitch PQ2300xb
0 < 2.10.7
DrayTek Corporation / VigorSwitch G2542x
0 < 3.10.6
DrayTek Corporation / VigorSwitch P2542x
0 < 3.10.6
DrayTek Corporation / VigorSwitch P2542xh
0 < 3.10.6
DrayTek Corporation / VigorSwitch PX2060
0 < 2.9.10
DrayTek Corporation / VigorSwitch G1280
0 < 2.9.10
DrayTek Corporation / VigorSwitch P1280
0 < 2.9.10
DrayTek Corporation / VigorSwitch P1281x
0 < 2.9.10
DrayTek Corporation / VigorSwitch G1282
0 < 2.9.10
DrayTek Corporation / VigorSwitch P1282
0 < 2.9.10
DrayTek Corporation / VigorSwitch G2121
0 < 2.9.10
DrayTek Corporation / VigorSwitch P2121
0 < 2.9.10
DrayTek Corporation / VigorSwitch PQ2121x
0 < 2.9.10
DrayTek Corporation / VigorSwitch Q2121x
0 < 2.9.10
DrayTek Corporation / VigorSwitch G2280x
0 < 2.9.10
DrayTek Corporation / VigorSwitch P2280x
0 < 2.9.10
DrayTek Corporation / VigorSwitch Q2200x
0 < 2.9.10
DrayTek Corporation / VigorSwitch PQ2200xb
0 < 2.9.10
DrayTek Corporation / VigorSwitch G2100
0 < 2.9.10
DrayTek Corporation / VigorSwitch P2100
0 < 2.9.10
DrayTek Corporation / VigorSwitch G2540x
0 < 2.9.10
DrayTek Corporation / VigorSwitch P2540x
0 < 2.9.10

References

NVD ↗ CVE.org ↗ EPSS Data ↗
draytek.com: https://www.draytek.com/about/security-advisory/multiple-vulnerabilities-in-vigorswitch-series-august-2026/ vulncheck.com: https://www.vulncheck.com/advisories/draytek-vigorswitch-multiple-models-path-traversal-via-getsyslogfile

Credits

Jincheng Wang (@winmt) Le Yu (Nanjing University of Posts and Telecommunications) Xiapu Luo (The Hong Kong Polytechnic University)