6.9
CVE-2026-71920
- EPSS 0.39%
- Veröffentlicht 24.08.2026 17:07:50
- Zuletzt bearbeitet 26.08.2026 17:08:22
- Erkennungen
DrayTek VigorSwitch Multiple Models NULL Pointer Dereference via formlogout
Multiple DrayTek VigorSwitch models contain a null pointer dereference vulnerability in the formlogout function. The vulnerability is caused by missing checks for an empty or absent Cookie header before string handling. A remote attacker can trigger this vulnerability via a crafted request to crash the service and cause a denial of service. Exploitation requires valid administrative credentials for the device's web management interface.
Daten sind bereitgestellt durch das CVE Programm von einer CVE Numbering Authority (CNA) (Unstrukturiert).
HerstellerDrayTek Corporation
≫
Produkt
VigorSwitch G2540xs
Default Statusunaffected
Version
0
Version <
3.9.10
Status
affected
HerstellerDrayTek Corporation
≫
Produkt
VigorSwitch P2540xs
Default Statusunaffected
Version
0
Version <
3.9.10
Status
affected
HerstellerDrayTek Corporation
≫
Produkt
VigorSwitch FX2120
Default Statusunaffected
Version
0
Version <
3.9.10
Status
affected
HerstellerDrayTek Corporation
≫
Produkt
VigorSwitch G2282x
Default Statusunaffected
Version
0
Version <
2.10.6
Status
affected
HerstellerDrayTek Corporation
≫
Produkt
VigorSwitch P2282x
Default Statusunaffected
Version
0
Version <
2.10.6
Status
affected
HerstellerDrayTek Corporation
≫
Produkt
VigorSwitch Q2300x
Default Statusunaffected
Version
0
Version <
2.10.7
Status
affected
HerstellerDrayTek Corporation
≫
Produkt
VigorSwitch PQ2300xb
Default Statusunaffected
Version
0
Version <
2.10.7
Status
affected
HerstellerDrayTek Corporation
≫
Produkt
VigorSwitch G2542x
Default Statusunaffected
Version
0
Version <
3.10.6
Status
affected
HerstellerDrayTek Corporation
≫
Produkt
VigorSwitch P2542x
Default Statusunaffected
Version
0
Version <
3.10.6
Status
affected
HerstellerDrayTek Corporation
≫
Produkt
VigorSwitch P2542xh
Default Statusunaffected
Version
0
Version <
3.10.6
Status
affected
HerstellerDrayTek Corporation
≫
Produkt
VigorSwitch PX2060
Default Statusunaffected
Version
0
Version <
2.9.10
Status
affected
HerstellerDrayTek Corporation
≫
Produkt
VigorSwitch G1280
Default Statusunaffected
Version
0
Version <
2.9.10
Status
affected
HerstellerDrayTek Corporation
≫
Produkt
VigorSwitch P1280
Default Statusunaffected
Version
0
Version <
2.9.10
Status
affected
HerstellerDrayTek Corporation
≫
Produkt
VigorSwitch P1281x
Default Statusunaffected
Version
0
Version <
2.9.10
Status
affected
HerstellerDrayTek Corporation
≫
Produkt
VigorSwitch G1282
Default Statusunaffected
Version
0
Version <
2.9.10
Status
affected
HerstellerDrayTek Corporation
≫
Produkt
VigorSwitch P1282
Default Statusunaffected
Version
0
Version <
2.9.10
Status
affected
HerstellerDrayTek Corporation
≫
Produkt
VigorSwitch G2121
Default Statusunaffected
Version
0
Version <
2.9.10
Status
affected
HerstellerDrayTek Corporation
≫
Produkt
VigorSwitch P2121
Default Statusunaffected
Version
0
Version <
2.9.10
Status
affected
HerstellerDrayTek Corporation
≫
Produkt
VigorSwitch PQ2121x
Default Statusunaffected
Version
0
Version <
2.9.10
Status
affected
HerstellerDrayTek Corporation
≫
Produkt
VigorSwitch Q2121x
Default Statusunaffected
Version
0
Version <
2.9.10
Status
affected
HerstellerDrayTek Corporation
≫
Produkt
VigorSwitch G2280x
Default Statusunaffected
Version
0
Version <
2.9.10
Status
affected
HerstellerDrayTek Corporation
≫
Produkt
VigorSwitch P2280x
Default Statusunaffected
Version
0
Version <
2.9.10
Status
affected
HerstellerDrayTek Corporation
≫
Produkt
VigorSwitch Q2200x
Default Statusunaffected
Version
0
Version <
2.9.10
Status
affected
HerstellerDrayTek Corporation
≫
Produkt
VigorSwitch PQ2200xb
Default Statusunaffected
Version
0
Version <
2.9.10
Status
affected
HerstellerDrayTek Corporation
≫
Produkt
VigorSwitch G2100
Default Statusunaffected
Version
0
Version <
2.9.10
Status
affected
HerstellerDrayTek Corporation
≫
Produkt
VigorSwitch P2100
Default Statusunaffected
Version
0
Version <
2.9.10
Status
affected
HerstellerDrayTek Corporation
≫
Produkt
VigorSwitch G2540x
Default Statusunaffected
Version
0
Version <
2.9.10
Status
affected
HerstellerDrayTek Corporation
≫
Produkt
VigorSwitch P2540x
Default Statusunaffected
Version
0
Version <
2.9.10
Status
affected
VulnDex Vulnerability Enrichment
Diese Information steht angemeldeten Benutzern zur Verfügung. 
Login
Login| Typ | Quelle | Score | Percentile |
|---|---|---|---|
| EPSS | FIRST.org | 0.39% | 0.32 |
| Quelle | Base Score | Exploit Score | Impact Score | Vector String |
|---|---|---|---|---|
| disclosure@vulncheck.com | 6.9 | 0 | 0 |
CVSS:4.0/AV:N/AC:L/AT:N/PR:H/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X
|
| disclosure@vulncheck.com | 4.9 | 1.2 | 3.6 |
CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:N/I:N/A:H
|
CWE-476 NULL Pointer Dereference
The product dereferences a pointer that it expects to be valid but is NULL.
https://www.draytek.com/about/security-advisory/multiple-vulnerabilities-in-vigorswitch-series-august-2026/
https://www.vulncheck.com/advisories/draytek-vigorswitch-multiple-models-null-pointer-dereference-via-formlogout