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PatchSiren cyber security CVE debrief

CVE-2025-50650 D‑Link CVE debrief

A buffer overflow vulnerability exists in D-Link DI-8003 16.07.26A1 due to inadequate validation of input size in the routes_static parameter in the /router.asp endpoint. This HIGH severity vulnerability has a CVSS score of 7.5. It could allow for arbitrary code execution if exploited. Security teams and administrators should be aware of this vulnerability and take necessary actions to mitigate the risk. The vulnerability is caused by inadequate validation of input size, which allows for a buffer overflow. The CVSS vector is CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H.

Vendor
D‑Link
Product
DI-8003
CVSS
HIGH 7.5
CISA KEV
Not listed in stored evidence
Original CVE published
2026-04-08
Original CVE updated
2026-07-25
Advisory published
2026-04-08
Advisory updated
2026-07-25

Who should care

Security teams and administrators responsible for D-Link DI-8003 devices should be aware of this vulnerability and take necessary actions to mitigate the risk. This includes reviewing the official advisory, applying patches or updates, and implementing compensating controls if necessary. The vulnerability could lead to significant impact if exploited, including arbitrary code execution.

Technical summary

The vulnerability is caused by inadequate validation of input size in the routes_static parameter in the /router.asp endpoint of D-Link DI-8003 16.07.26A1. This allows for a buffer overflow, potentially leading to arbitrary code execution. The CVSS vector is CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H. The vulnerability has a high CVSS score of 7.5, indicating high severity. There is no evidence of exploitation in the wild.

Defensive priority

High priority should be given to patching or mitigating this vulnerability, as it has a high CVSS score and could lead to significant impact if exploited.

Recommended defensive actions

  • Apply the vendor-provided patch or update to a fixed version of the firmware.
  • Implement network segmentation to limit the attack surface.
  • Monitor network traffic and system logs for suspicious activity.
  • Consider implementing a web application firewall (WAF) to detect and prevent attacks.
  • Conduct regular vulnerability assessments and penetration testing to identify and address potential vulnerabilities.
  • Review compensating controls for exposed systems while remediation is scheduled and verified.
  • Track exceptions, retest remediated assets, and close the item only after evidence is documented.

Evidence notes

The CVE record was published on 2026-04-08T19:24:15.800Z and last modified on 2026-07-25T10:10:00.167Z. The NVD entry is currently Modified. This information is based on the NVD entry and CVE record. The vulnerability affects D-Link DI-8003 16.07.26A1. Evidence of exploitation is not currently available. Defenders should verify the affected product scope and review the official advisory for mitigation guidance.

Sources and references

Verified primary and authoritative sources

  • CVE-2025-50650 CVE Program record

    Publisher, destination, and source semantics verified

    URL: https://www.cve.org/CVERecord?id=CVE-2025-50650

    CVE Program - Official CVE Program record with source-provided CVE metadata.

  • CVE-2025-50650 NVD vulnerability detail

    Publisher, destination, and source semantics verified

    URL: https://nvd.nist.gov/vuln/detail/CVE-2025-50650

    NIST National Vulnerability Database - Official NIST NVD detail page and source-specific vulnerability assessment.

Supplemental references

Methodology and review provenance

AI-assisted synthesis based on stored public vulnerability evidence. System validation, approval state, and publication status do not by themselves establish human review of this revision. PatchSiren helps prioritize defensive review and does not prove exposure or remediation on any system.