D-Link DIR-822 A_101 udhcpd DHCP Service /udhcpcd/dhcpd.c system Hostname command injection
Summary
A vulnerability labeled as critical has been found in D-Link DIR-822 A_101. This affects the function system of the file /udhcpcd/dhcpd.c of the component udhcpd DHCP Service. Such manipulation of the argument Hostname leads to command injection. This vulnerability only affects products that are no longer supported by the maintainer.
This vulnerability is uniquely identified as CVE-2026-7067. The attack can be launched remotely. Moreover, an exploit is present.
Details
A vulnerability, which was classified as critical, has been found in D-Link DIR-822 A_101. Affected by this issue is the function system of the file /udhcpcd/dhcpd.c of the component udhcpd DHCP Service. The manipulation of the argument hostname 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.
The advisory is available at tzh00203.notion.site. This vulnerability is handled as CVE-2026-7067. The exploitation is known to be easy. The attack may be launched remotely. No form of authentication is required for exploitation. Technical details as well as a public exploit are known. The structure of the vulnerability defines a possible price range of USD $0-$5k at the moment (estimation calculated on 04/26/2026). This vulnerability is assigned to T1202 by the MITRE ATT&CK project.
The exploit is available at tzh00203.notion.site. It is declared as proof-of-concept.
There is no information about possible countermeasures known. It may be suggested to replace the affected object with an alternative product.
If you want to get best quality of vulnerability data, you may have to visit VulDB.
Product
Type
Vendor
Name
Version
License
Support
Website
- Vendor: https://www.dlink.com/
CPE 2.3
CPE 2.2
CVSSv4
VulDB Vector: 🔒VulDB Reliability: 🔍
CVSSv3
VulDB Meta Base Score: 7.3VulDB Meta Temp Score: 6.6
VulDB Base Score: 7.3
VulDB Temp Score: 6.6
VulDB Vector: 🔒
VulDB Reliability: 🔍
CVSSv2
| AV | AC | Au | C | I | A |
|---|---|---|---|---|---|
| 💳 | 💳 | 💳 | 💳 | 💳 | 💳 |
| 💳 | 💳 | 💳 | 💳 | 💳 | 💳 |
| 💳 | 💳 | 💳 | 💳 | 💳 | 💳 |
| Vector | Complexity | Authentication | Confidentiality | Integrity | Availability |
|---|---|---|---|---|---|
| Unlock | Unlock | Unlock | Unlock | Unlock | Unlock |
| Unlock | Unlock | Unlock | Unlock | Unlock | Unlock |
| Unlock | Unlock | Unlock | Unlock | Unlock | Unlock |
VulDB Base Score: 🔒
VulDB Temp Score: 🔒
VulDB Reliability: 🔍
Exploiting
Class: Command injectionCWE: CWE-77 / CWE-74 / CWE-707
CAPEC: 🔒
ATT&CK: 🔒
Physical: No
Local: No
Remote: Yes
Availability: 🔒
Access: Public
Status: Proof-of-Concept
Download: 🔒
Price Prediction: 🔍
Current Price Estimation: 🔒
| 0-Day | Unlock | Unlock | Unlock | Unlock |
|---|---|---|---|---|
| Today | Unlock | Unlock | Unlock | Unlock |
Threat Intelligence
Interest: 🔍Active Actors: 🔍
Active APT Groups: 🔍
Countermeasures
Recommended: no mitigation knownStatus: 🔍
0-Day Time: 🔒
Timeline
04/26/2026 Advisory disclosed04/26/2026 VulDB entry created
04/26/2026 VulDB entry last update
Sources
Vendor: dlink.comAdvisory: tzh00203.notion.site
Status: Not defined
CVE: CVE-2026-7067 (🔒)
GCVE (CVE): GCVE-0-2026-7067
GCVE (VulDB): GCVE-100-359642
scip Labs: https://www.scip.ch/en/?labs.20161013
Entry
Created: 04/26/2026 09:32Updated: 04/26/2026 09:42
Changes: 04/26/2026 09:32 (58), 04/26/2026 09:42 (1)
Complete: 🔍
Submitter: tian
Cache ID: 216::103
Submit
Accepted
- Submit #798645: D-Link DIR822A_101 A_101 Buffer Overflow (by tian)
If you want to get best quality of vulnerability data, you may have to visit VulDB.
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