Which versions of Dir 822K Firmware are affected by CVE-2025-13549?

Organizations using A vulnerability face moderate risk from CVE-2025-13549, a buffer overflow vulnerability rated CVSS 7.4.

Is there a public PoC exploit available for CVE-2025-13549?

Yes, a public proof-of-concept exploit is available for CVE-2025-13549. Prioritise patching immediately. EPSS: 0.1%.

How to fix or mitigate CVE-2025-13549?

Within 30 days: Identify all affected systems and apply vendor patches as part of regular patch cycle. Monitor vendor channels for patch availability.

Dir 822K Firmware CVE-2025-13549

Q: What is the CVSS score of CVE-2025-13549?

CVE-2025-13549 has a CVSS 4.0 base score of 7.4 (High). CVSS vector: 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. EPSS exploitation probability: 0.1%.

HIGH

Buffer Overflow (CWE-119)

2025-11-23 cna@vuldb.com

D-Link Buffer Overflow Dir 822K Firmware

7.4

CVSS 4.0 · NVD

Severity by source

NVD PRIMARY

7.4 HIGH

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

Primary rating from NVD · only source for this CVE.

CVSS VectorNVD

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

Attack Vector

Network

Attack Complexity

Low

Privileges Required

Low

User Interaction

None

Scope

Lifecycle Timeline

Analysis Generated

Mar 28, 2026 - 19:23 vuln.today

PoC Detected

Dec 02, 2025 - 03:32 vuln.today

Public exploit code

CVE Published

Nov 23, 2025 - 12:15 nvd

HIGH 7.4

DescriptionCVE.org

A vulnerability was found in D-Link DIR-822K 1.00. This issue affects the function sub_455524 of the file /boafrm/formNtp. Performing manipulation of the argument submit-url results in buffer overflow. Remote exploitation of the attack is possible. The exploit has been made public and could be used.

AnalysisAI

A vulnerability was found in D-Link DIR-822K 1.00. Rated high severity (CVSS 7.4), this vulnerability is remotely exploitable, low attack complexity. Public exploit code available and no vendor patch available.

Technical ContextAI

This vulnerability is classified as Buffer Overflow (CWE-119), which allows attackers to corrupt memory to execute arbitrary code or crash the application. A vulnerability was found in D-Link DIR-822K 1.00. Performing manipulation of the argument submit-url results in buffer overflow. Remote exploitation of the attack is possible. The exploit has been made public and could be used. Affected products include: Dlink Dir-822K Firmware.

RemediationAI

No vendor patch is available at time of analysis. Monitor vendor advisories for updates. Use memory-safe languages or bounds-checking. Enable ASLR, DEP/NX, stack canaries. Use safe string functions.

CVE-2025-13549 vulnerability details – vuln.today

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