Cyber Resilience

CVE-2025-13552

Memory Safety in Dlink Dir-822K Firmware 1.00_20250513164613

Public PoCMemory Safety
Published
23 November 2025
Modified
02 December 2025
Patch / advisory
View advisory
CVSS Score v4 7.4
Click a component to see what it means
Raw vectorCVSS: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 Score 0.0076 52th percentile
Risk Priority 38 floored blend · peak EPSS

Summary

CVE-2025-13552 is a high-severity Improper Restriction of Operations within the Bounds of a Memory Buffer (CWE-119) vulnerability in Dlink Dir-822K Firmware. Its CVSS base score is 7.4 (High).

Operationally, exploitation aligns with the MITRE ATT&CK technique Exploitation for Privilege Escalation (T1068); ranked in the top 48% of CVEs by exploit likelihood; it is not currently listed in the CISA KEV catalog; a public proof-of-concept is referenced.

The strongest mitigations our analysis identified map to SA-11 (Developer Testing and Evaluation) and SI-10 (Information Input Validation) — see the control section below for these in your framework.

Deeper analysis AI-assisted summary

Synthesised by an AI model from the NVD description and linked references — a reading aid, not an authoritative source.

CVE-2025-13552 is a buffer overflow vulnerability (CWE-119, CWE-120) discovered in D-Link DIR-822K and DWR-M920 routers running firmware versions 1.00_20250513164613 and 1.1.50. The flaw affects an unknown function in the /boafrm/formWlEncrypt file and is triggered by manipulating the submit-url argument.

The vulnerability enables remote exploitation over the network with low attack complexity and requires low privileges (PR:L) but no user interaction (CVSS:3.1 score of 8.8; AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H). An attacker with such access can achieve high impacts on confidentiality, integrity, and availability, potentially leading to arbitrary code execution on the affected device.

Advisories and details are available in references such as GitHub issues at https://github.com/QIU-DIE/CVE/issues/36 and https://github.com/QIU-DIE/CVE/issues/44, along with VulDB entries at https://vuldb.com/?ctiid.333319, https://vuldb.com/?id.333319, and https://vuldb.com/?submit.693803; no specific patches or mitigations are detailed in the disclosure.

An exploit for this vulnerability has been publicly released, indicating potential for active exploitation.

EU & UK References

Vulnerability Data

A security flaw has been discovered in D-Link DIR-822K and DWR-M920 1.00_20250513164613/1.1.50. The impacted element is an unknown function of the file /boafrm/formWlEncrypt. The manipulation of the argument submit-url results in buffer overflow. The attack may be performed from remote.…

more

The exploit has been released to the public and may be exploited.

CWE(s)
CWE-119CWE-120

Related Threats

MITRE ATT&CK Enterprise Techniques

T1068 Exploitation for Privilege Escalation Privilege Escalation
Adversaries may exploit software vulnerabilities in an attempt to elevate privileges.
attack.mitre.org →
T1190 Exploit Public-Facing Application Initial Access
Adversaries may attempt to exploit a weakness in an Internet-facing host or system to initially access a network.
attack.mitre.org →
T1203 Exploitation for Client Execution Execution
Adversaries may exploit software vulnerabilities in client applications to execute code.
attack.mitre.org →
T1210 Exploitation of Remote Services Lateral Movement
Adversaries may exploit remote services to gain unauthorized access to internal systems once inside of a network.
attack.mitre.org →
T1055 Process Injection Stealth
Adversaries may inject code into processes in order to evade process-based defenses as well as possibly elevate privileges.
attack.mitre.org →
T1212 Exploitation for Credential Access Credential Access
Adversaries may exploit software vulnerabilities in an attempt to collect credentials.
attack.mitre.org →
Derived from this CVE’s CWE(s) via the direct CWE→ATT&CK cross-walk.

CVEs Like This One

CVE-2025-13551Same product: Dlink Dir-822K
CVE-2025-13548Same product: Dlink Dir-822K
CVE-2025-13550Same product: Dlink Dir-822K
CVE-2025-13547Same product: Dlink Dir-822K
CVE-2025-15189Same product: Dlink Dwr-M920
CVE-2025-15193Same product: Dlink Dwr-M920
CVE-2025-13549Same product: Dlink Dir-822K
CVE-2025-13553Same product: Dlink Dwr-M920
CVE-2025-15190Same product: Dlink Dwr-M920
CVE-2025-13304Same product: Dlink Dwr-M920

Affected Assets

dlink
dir-822k firmware
1.00_20250513164613
dlink
dwr-m920 firmware
1.1.50

Mitigating Controls

Control response

Prevent
Stop it (NIST 800-53)

—

Detect
Catch it (NIST detect / respond)

—

Harden
Shrink the surface (DISA STIG)

—

Validate
Prove the fix (OWASP ASVS)
  • V17.3.2
  • V5.2.1

Mitigating Controls (NIST 800-53 r5) AI

SA-11 Developer Testing and Evaluation good match

Developer testing and analysis can find missing size checks before deployment.

SI-10 Information Input Validation good match

Input validation directly enforces size checks before buffer copies.

SA-8 Security and Privacy Engineering Principles partial match

Secure engineering principles require memory-safe design and coding that structurally avoids buffer-boundary violations.

SI-16 Memory Protection partial match

Memory protection restricts exploitation impact of buffer overflows without eliminating the underlying coding flaw.

Mitigating Controls (NIST CSF 2.0) AI

Derived directly from the weakness types (CWEs) cited in the NVD entry via our AI-authored CWE→CSF cross-walk (authority under review) — links open the control.

PR.PS-06 mostly match
prevents

Secure SDLC practices (bounds checking, safe APIs, reviews) directly prevent this class of flaw.

ID.RA-01 partial match
prevents

Vulnerability scanning and code analysis directly surface buffer-boundary flaws.

ID.RA-08 partial match
prevents

Receiving and triaging vulnerability disclosures commonly includes buffer-related reports.

PR.AT-02 partial match
prevents

Developer training on secure coding reduces introduction of memory-buffer errors.

PR.PS-02 partial match
prevents

Patching replaces vulnerable code containing buffer-boundary defects.

Mitigating Controls (ISO/IEC 27001:2022 Annex A) AI

Derived directly from the weakness types (CWEs) cited in the NVD entry via our AI-authored CWE→ISO cross-walk (authority under review) — links open the control.

A.8.28 Secure coding mostly match
prevents

Secure coding directly requires bounds-checked memory operations, addressing the root cause of CWE-120.

A.8.29 Security testing in development and acceptance mostly match
finds

Security testing in development catches out-of-bounds accesses before release, covering most instances of the weakness.

A.8.25 Secure development life cycle partial match
prevents

Secure development lifecycle mandates memory-safety practices that directly prevent buffer-boundary violations.

A.8.26 Application security requirements partial match
prevents

Application security requirements can specify memory-safety rules, but do not prescribe implementation details.

A.8.27 Secure system architecture and engineering principles partial match
prevents

Secure architecture and engineering principles include memory-safe design patterns that mitigate buffer overflows.

References