Cyber Resilience

CVE-2025-45058

Memory Safety in Dlink Di-8300 Firmware 16.07.26a1

Memory Safety
Published
08 April 2026
Modified
25 July 2026
Patch / advisory
View advisory
CVSS Score v3.1 7.5
Click a component to see what it means
Raw vectorCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
EPSS Score 0.0040 33th percentile
Risk Priority 57 floored blend · peak EPSS

Summary

CVE-2025-45058 is a high-severity Classic Buffer Overflow (CWE-120) vulnerability in Dlink Di-8300 Firmware. Its CVSS base score is 7.5 (High).

Operationally, exploitation aligns with the MITRE ATT&CK technique Exploitation for Privilege Escalation (T1068); ranked at the 33th percentile by exploit likelihood (below the median); it is not currently listed in the CISA KEV catalog.

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-2025-45058 is a buffer overflow vulnerability (CWE-120) in the D-Link DI-8300 router running firmware version 16.07.26A1. The flaw occurs in the jingx_asp function when processing the fx parameter, enabling attackers to trigger a Denial of Service (DoS) condition through a specially crafted input. It carries a CVSS v3.1 base score of 7.5 (AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H), highlighting its potential for significant availability disruption.

The vulnerability can be exploited by unauthenticated attackers with network access to the affected device, requiring low complexity and no user interaction. By sending a malicious payload to the fx parameter, attackers can overflow the buffer in the jingx_asp function, crashing the router and rendering it unavailable, which disrupts network services hosted by the device.

Mitigation guidance and patches may be available through D-Link's official resources, including the English security bulletin at https://www.dlink.com/en/security-bulletin/, Chinese product support page for the DI-8300 at https://www.dlink.com.cn/techsupport/ProductInfo.aspx?m=DI-8300, and a related entry in the IoT vulnerability collection at https://github.com/xiaotea/iot-vulnerability-collection/blob/main/README.md. Security practitioners should consult these for firmware updates or workarounds.

EU & UK References

Vulnerability Data

D-Link DI-8300 v16.07.26A1 was discovered to contain a buffer overflow via the fx parameter in the jingx_asp function. This vulnerability allows attackers to cause a Denial of Service (DoS) via a crafted input.

CWE(s)
CWE-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 →
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-2025-45057Same product: Dlink Di-8300
CVE-2025-45059Same product: Dlink Di-8300
CVE-2024-44410Same product: Dlink Di-8300
CVE-2024-44411Same product: Dlink Di-8300
CVE-2023-39750Same vendor: Dlink
CVE-2024-9559Same vendor: Dlink
CVE-2024-1786Same vendor: Dlink
CVE-2023-39666Same vendor: Dlink
CVE-2024-9532Same vendor: Dlink
CVE-2024-9915Same vendor: Dlink

Affected Assets

dlink
di-8300 firmware
16.07.26a1

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)
  • 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

Engineering principles require bounds checking and safe buffer handling in design.

SI-16 Memory Protection partial match

Memory protection limits the impact of an overflow once it occurs.

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 development practices directly enforce bounds checking and input validation that prevent classic buffer overflows.

ID.RA-01 partial match
prevents

Vulnerability identification processes such as code review or scanning detect classic buffer overflows before exploitation.

PR.PS-02 partial match
prevents

Routine patching replaces vulnerable code containing unchecked buffer copies with corrected versions.

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 and acceptance can detect buffer overflows through fuzzing and static analysis, though it does not prevent them at the source.

A.8.25 Secure development life cycle partial match
prevents

Secure development life cycle mandates processes that can include input validation and bounds checking to prevent buffer overflows.

A.8.26 Application security requirements partial match
prevents

Application security requirements can specify input-size validation and safe buffer handling to mitigate classic buffer overflows.

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

Secure system architecture and engineering principles promote defensive coding patterns that reduce the likelihood of unchecked buffer copies.

References