DrayTek VigorSwitch FX2120 pingtrace host command injection

CVSS Meta Temp Score
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Current Exploit Price (≈)
Our analysts are monitoring exploit markets and are in contact with vulnerability brokers. The range indicates the observed or calculated exploit price to be seen on exploit markets. A good indicator to understand the monetary effort required for and the popularity of an attack.
CTI Interest Score
Our Cyber Threat Intelligence team is monitoring different web sites, mailing lists, exploit markets and social media networks. The CTI Interest Score identifies the interest of attackers and the security community for this specific vulnerability in real-time. A high score indicates an elevated risk to be targeted for this vulnerability.
8.2$0-$5k0.95

Summaryinfo

A vulnerability was found in DrayTek VigorSwitch FX2120, VigorSwitch G1280, VigorSwitch G1282, VigorSwitch G2100, VigorSwitch G2121, VigorSwitch G2280x, VigorSwitch G2282x, VigorSwitch G2540x, VigorSwitch G2540xs, VigorSwitch G2542x, VigorSwitch P1280, VigorSwitch P1281x, VigorSwitch P1282, VigorSwitch P2100, VigorSwitch P2121, VigorSwitch P2280x, VigorSwitch P2282x, VigorSwitch P2540x, VigorSwitch P2540xs, VigorSwitch P2542x, VigorSwitch P2542xh, VigorSwitch PX2060, VigorSwitch Q2121x, VigorSwitch Q2200x, VigorSwitch Q2300x, VigorSwitch PQ2121x, VigorSwitch PQ2200xb and VigorSwitch PQ2300xb and classified as very critical. This affects the function pingtrace. Such manipulation of the argument host leads to command injection. This vulnerability is listed as CVE-2026-71917. The attack may be performed from remote. There is no available exploit.

Detailsinfo

A vulnerability was found in DrayTek VigorSwitch FX2120, VigorSwitch G1280, VigorSwitch G1282, VigorSwitch G2100, VigorSwitch G2121, VigorSwitch G2280x, VigorSwitch G2282x, VigorSwitch G2540x, VigorSwitch G2540xs, VigorSwitch G2542x, VigorSwitch P1280, VigorSwitch P1281x, VigorSwitch P1282, VigorSwitch P2100, VigorSwitch P2121, VigorSwitch P2280x, VigorSwitch P2282x, VigorSwitch P2540x, VigorSwitch P2540xs, VigorSwitch P2542x, VigorSwitch P2542xh, VigorSwitch PX2060, VigorSwitch Q2121x, VigorSwitch Q2200x, VigorSwitch Q2300x, VigorSwitch PQ2121x, VigorSwitch PQ2200xb and VigorSwitch PQ2300xb. It has been rated as very critical. Affected by this issue is the function pingtrace. The manipulation of the argument host with an unknown input leads to a command injection vulnerability. Using CWE to declare the problem leads to CWE-77. The product constructs all or part of a command using externally-influenced input from an upstream component, but it does not neutralize or incorrectly neutralizes special elements that could modify the intended command when it is sent to a downstream component. Impacted is confidentiality, integrity, and availability. CVE summarizes:

Multiple DrayTek VigorSwitch models contain a command injection vulnerability in the pingtrace function. The vulnerability is caused by insufficient validation of the host field before command execution. A remote attacker can trigger this vulnerability via crafted input to execute arbitrary commands with root privileges. Exploitation requires valid administrative credentials for the device's web management interface.

The advisory is shared for download at draytek.com. This vulnerability is handled as CVE-2026-71917 since 08/08/2026. The exploitation is known to be easy. The attack may be launched remotely. Additional levels of successful authentication are necessary for exploitation. There are known technical details, but no exploit is available. The current price for an exploit might be approx. USD $0-$5k (estimation calculated on 08/24/2026). The MITRE ATT&CK project declares the attack technique as T1202.

There is no information about possible countermeasures known. It may be suggested to replace the affected object with an alternative product.

Once again VulDB remains the best source for vulnerability data.

Productinfo

Type

Vendor

Name

License

CPE 2.3info

CPE 2.2info

CVSSv4info

VulDB Vector: 🔒
VulDB Reliability: 🔍

CNA CVSS-B Score: 🔒
CNA CVSS-BT Score: 🔒
CNA Vector: 🔒

CVSSv3info

VulDB Meta Base Score: 8.2
VulDB Meta Temp Score: 8.2

VulDB Base Score: 9.1
VulDB Temp Score: 9.1
VulDB Vector: 🔒
VulDB Reliability: 🔍

CNA Base Score: 7.2
CNA Vector (VulnCheck): 🔒

CVSSv2info

AVACAuCIA
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💳💳💳💳💳💳
💳💳💳💳💳💳
VectorComplexityAuthenticationConfidentialityIntegrityAvailability
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VulDB Base Score: 🔒
VulDB Temp Score: 🔒
VulDB Reliability: 🔍

Exploitinginfo

Class: Command injection
CWE: CWE-77 / CWE-74 / CWE-707
CAPEC: 🔒
ATT&CK: 🔒

Physical: No
Local: No
Remote: Yes

Availability: 🔒
Status: Not defined
Price Prediction: 🔍
Current Price Estimation: 🔒

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Threat Intelligenceinfo

Interest: 🔍
Active Actors: 🔍
Active APT Groups: 🔍

Countermeasuresinfo

Recommended: no mitigation known
Status: 🔍

0-Day Time: 🔒

Timelineinfo

08/08/2026 CVE reserved
08/24/2026 +16 days Advisory disclosed
08/24/2026 +0 days VulDB entry created
08/24/2026 +0 days VulDB entry last update

Sourcesinfo

Advisory: draytek.com
Status: Not defined

CVE: CVE-2026-71917 (🔒)
GCVE (CVE): GCVE-0-2026-71917
GCVE (VulDB): GCVE-100-394748

Entryinfo

Created: 08/24/2026 19:41
Changes: 08/24/2026 19:41 (74)
Complete: 🔍
Cache ID: 216::103

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