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Permalink CVE-2026-71922
8.7 HIGH
  • CVSS version (CVSS): 4.0
  • Attack Vector (AV): Network (N)
  • Attack Complexity (AC): Low (L)
  • Attack Requirement (AT): None (N)
  • Privileges Required (PR): None (N)
  • User Interaction (UI): None (N)
  • Vulnerable System Impact Confidentiality (VC): None (N)
  • Vulnerable System Impact Integrity (VI): None (N)
  • Vulnerable System Impact Availability (VA): High (H)
  • Subsequent System Impact Confidentiality (SC): None (N)
  • Subsequent System Impact Integrity (SI): None (N)
  • Subsequent System Impact Availability (SA): None (N)
  • Modified Attack Vector (MAV): Network (N)
  • Modified Attack Complexity (MAC): Low (L)
  • Modified Attack Requirement (MAT): None (N)
  • Modified Privileges Required (MPR): None (N)
  • Modified User Interaction (MUI): None (N)
  • Modified Vulnerable System Impact Confidentiality (MVC): None (N)
  • Modified Vulnerable System Impact Integrity (MVI): None (N)
  • Modified Vulnerable System Impact Availability (MVA): High (H)
  • Modified Subsequent System Impact Confidentiality (MSC): Negligible (N)
  • Modified Subsequent System Impact Integrity (MSI): Negligible (N)
  • Modified Subsequent System Impact Availability (MSA): Negligible (N)
  • Safety (S): Not Defined (X)
  • Automatable (AU): Not Defined (X)
  • Recovery (R): Not Defined (X)
  • Value Density (V): Not Defined (X)
  • Vulnerability Response Effort (RE): Not Defined (X)
  • Provider Urgency (U): Not Defined (X)
  • Confidentiality Req. (CR): Not Defined (X)
  • Integrity Req. (IR): Not Defined (X)
  • Availability Req. (AR): Not Defined (X)
  • Exploit Maturity (E): Not Defined (X)
created 3 weeks ago Activity log
  • Created & dismissed (no matching packages found) suggestion 3 weeks ago
DrayTek VigorSwitch Multiple Models Pre-Authentication NULL Pointer Dereference via setget.cgi

Multiple DrayTek VigorSwitch models contain a pre-authentication null pointer dereference vulnerability in the setget.cgi interface. The vulnerability is caused by missing validation when the pass field is absent. A remote attacker can trigger this vulnerability via a crafted request to crash the service and cause a denial of service.

Affected products

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