CVE-2026-71932

DrayTek VigorSwitch Multiple Models Path Traversal via getSyslogFile

MEDIUM

4.9

CVSS Score

Published: August 24, 2026 at 05:07 PM UTC

Updated: October 12, 2026 at 10:10 PM UTC

42 products affected across 1 vendorVigorswitch Q2200X FirmwareVigorswitch PQ2121X FirmwareVigorswitch PQ2200XB Firmware

Using VigorSwitch G2540xs by DrayTek Corporation?

Get instant alerts when new vulnerabilities affect VigorSwitch G2540xs - before attackers find them.

Real-time alertsTrack your software stackFree plan available

Start Free Sign In

Severity

MEDIUM4.9

Exploit prediction

EPSS 1%

SSVC

No known exploit

Description

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.

Affected

Our own answer: ranges merged, affected separated from platform-only, with confidence and review flags.

Vigorswitch FX2120 Firmware · Draytek

95%

v < 3.9.10

Affected range stops below 3.9.10, so it looks safe — our inference, not a vendor statement

Vigorswitch G1282 Firmware · Draytek

95%

v < 2.9.10

Affected range stops below 2.9.10, so it looks safe — our inference, not a vendor statement

Vigorswitch G2100 Firmware · Draytek

95%

v < 2.9.10

Affected range stops below 2.9.10, so it looks safe — our inference, not a vendor statement

Vigorswitch G2121 Firmware · Draytek

95%

v < 2.9.10

Affected range stops below 2.9.10, so it looks safe — our inference, not a vendor statement

Vigorswitch G2280X Firmware · Draytek

95%

v < 2.9.10

Affected range stops below 2.9.10, so it looks safe — our inference, not a vendor statement

Vigorswitch G2540XS Firmware · Draytek

95%

v < 3.9.10

Affected range stops below 3.9.10, so it looks safe — our inference, not a vendor statement

Vigorswitch P1282 Firmware · Draytek

95%

v < 2.9.10

Affected range stops below 2.9.10, so it looks safe — our inference, not a vendor statement

Vigorswitch P2100 Firmware · Draytek

95%

v < 2.9.10

Affected range stops below 2.9.10, so it looks safe — our inference, not a vendor statement

Vigorswitch P2280X Firmware · Draytek

95%

v < 2.9.10

Affected range stops below 2.9.10, so it looks safe — our inference, not a vendor statement

Vigorswitch P2540XS Firmware · Draytek

95%

v < 3.9.10

Affected range stops below 3.9.10, so it looks safe — our inference, not a vendor statement

Remediation

No guide yet

No remediation guidance has been written for this CVE yet. What the record does show:

Patch and advisory references

https://www.draytek.com/about/security-advisory/multiple-vulnerabilities-in-vigorswitch-series-august-2026/

References (2)

Vendor Advisory

Source: cverecord

https://www.draytek.com/about/security-advisory/multiple-vulnerabilities-in-vigorswitch-series-august-2026/

Third Party Advisory

Source: cverecord

https://www.vulncheck.com/advisories/draytek-vigorswitch-multiple-models-path-traversal-via-getsyslogfile

SSVC — Action Prioritization

SSVCNo known exploitNot automatablePartial impact

SSVC signals action urgency (what to patch first), separate from CVSS which measures severity.

CVSS

4.9MEDIUMVulnCheck

Attack Vector: NETWORK
Complexity: LOW
Privileges: HIGH
User Interaction: NONE
Scope: UNCHANGED
Confidentiality: HIGH
Integrity: NONE
Availability: NONE

Vector?

Quick Info

StatusDEFERRED

CWE

CWE-22

Get alerted

Stop reading CVE feeds looking for your own stack

Track the products you run and VulnTracker tells you when a new CVE affects them — with what is known about fixing it, and nothing about the rest.

Create account Sign in

Free plan, no card