CVE-2026-71912

DrayTek VigorAP Multiple Models Buffer Overflow via apautotest

HIGH

7.2

CVSS Score

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

Updated: October 13, 2026 at 09:10 AM UTC

12 products affected across 1 vendorVigorap 903 FirmwareVigorap 918R FirmwareVigorap 912C Firmware

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Severity

HIGH7.2

Exploit prediction

EPSS 0.7%

SSVC

No known exploit

Description

Multiple DrayTek VigorAP models contain a buffer overflow vulnerability in the apautotest function. The vulnerability is caused by missing length checks during memory copy operations involving the CMD6 field. A remote attacker can trigger this vulnerability via crafted input, causing a denial of service or potentially executing arbitrary commands. 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.

Vigorap 1060C Firmware · Draytek

95%

v < 1.4.12

Affected range stops below 1.4.12, so it looks safe — our inference, not a vendor statement

Vigorap 903 Firmware · Draytek

95%

v < 1.4.22

Affected range stops below 1.4.22, so it looks safe — our inference, not a vendor statement

Vigorap 906 Firmware · Draytek

95%

v < 1.4.13

Affected range stops below 1.4.13, so it looks safe — our inference, not a vendor statement

Vigorap 912C Firmware · Draytek

95%

v < 1.4.15

Affected range stops below 1.4.15, so it looks safe — our inference, not a vendor statement

Vigorap 918R Firmware · Draytek

95%

v < 1.4.11

Affected range stops below 1.4.11, so it looks safe — our inference, not a vendor statement

Vigorap 960C Firmware · Draytek

95%

v < 1.4.12

Affected range stops below 1.4.12, so it looks safe — our inference, not a vendor statement

VigorAP 1060C · Draytek

90%

0 ≤ v < 1.4.120

Affected range stops below 1.4.12, so it looks safe — our inference, not a vendor statement

VigorAP 903 · Draytek

90%

0 ≤ v < 1.4.220

Affected range stops below 1.4.22, so it looks safe — our inference, not a vendor statement

VigorAP 906 · Draytek

90%

0 ≤ v < 1.4.130

Affected range stops below 1.4.13, so it looks safe — our inference, not a vendor statement

VigorAP 912C · Draytek

90%

0 ≤ v < 1.4.150

Affected range stops below 1.4.15, 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-remote-code-execution-and-buffer-overflow-vulnerabilities-in-vigorap-series-august-2026/

References (2)

Vendor Advisory

Source: cverecord

https://www.draytek.com/about/security-advisory/multiple-remote-code-execution-and-buffer-overflow-vulnerabilities-in-vigorap-series-august-2026/

Third Party Advisory

Source: cverecord

https://www.vulncheck.com/advisories/draytek-vigorap-multiple-models-buffer-overflow-via-apautotest

SSVC — Action Prioritization

SSVCNo known exploitNot automatableTotal impact

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

CVSS

7.2HIGHVulnCheck

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

Vector?

Quick Info

StatusDEFERRED

CWE

CWE-120

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