Vulnerability details
CVE-2026-4181
D-Link DIR-816
D-Link DIR-816 goahead form2RepeaterStep2.cgi stack-based overflow
CVSS 4.0
9.3Critical
Official description
A security flaw has been discovered in D-Link DIR-816 1.10CNB05. This affects an unknown function of the file /goform/form2RepeaterStep2.cgi of the component goahead. The manipulation of the argument key1/key2/key3/key4/pskValue results in stack-based buffer overflow. The attack may be launched remotely. The exploit has been released to the public and may be used for attacks. This vulnerability only affects products that are no longer supported by the maintainer.
CVSS scores
| Score | Version | Source | Vector |
|---|---|---|---|
| 9.3Critical | 4.0 | CVEProject cvelistV5 (CNA) (VulDB) | CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N/E:P |
| 9.8Critical | 3.1 | CVEProject cvelistV5 (CNA) (VulDB) | CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H/E:P/RL:X/RC:R |
| 9.8Critical | 3.0 | CVEProject cvelistV5 (CNA) (VulDB) | CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H/E:P/RL:X/RC:R |
| 10.0High | 2.0 | CVEProject cvelistV5 (CNA) (VulDB) | AV:N/AC:L/Au:N/C:C/I:C/A:C/E:POC/RL:ND/RC:UR |
Affected products
| Vendor | Product | Versions | Source |
|---|---|---|---|
| D-Link | DIR-816 | 1.10CNB05 | CVEProject cvelistV5 (CNA) |
References and advisories
5- https://vuldb.com/?id.351085 vdb-entrytechnical-description
- https://vuldb.com/?ctiid.351085 signaturepermissions-required
- https://vuldb.com/?submit.769829 third-party-advisory
- https://github.com/wudipjq/my_vuln/blob/main/D-Link7/vuln_85/85.md exploit
- https://www.dlink.com/ product
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Details
- Published
- 2026-03-15
- Last updated
- 2026-03-16
- State
- Published
- Assigner (CNA)
- VulDB
Exploit prediction (EPSS)
1.23%
Probability of exploitation in 30 days
69.1%
Percentile (among all CVEs)
SSVC assessment (CISA)
- Automatable
- No
- Exploitation
- Proof of concept
- Technical impact
- Partial
Weaknesses (CWE)
- CWE-121Stack-based Buffer Overflow
- CWE-119Memory Corruption