Cyber Resilience

CVE-2025-60679

Memory Safety in Dlink Dir-816 Firmware 1.10cnb05_r1b011d88210

Public PoCMemory Safety
Published
13 November 2025
Modified
05 July 2026
Patch / advisory
CVSS Score v3.1 8.8
Click a component to see what it means
Raw vectorCVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
EPSS Score 0.0067 49th percentile
Risk Priority 65 floored blend · peak EPSS

Summary

CVE-2025-60679 is a high-severity Stack-based Buffer Overflow (CWE-121) vulnerability in Dlink Dir-816 Firmware. Its CVSS base score is 8.8 (High).

Operationally, exploitation aligns with the MITRE ATT&CK technique Exploitation for Privilege Escalation (T1068); ranked at the 49th percentile by exploit likelihood (below the median); 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-2025-60679 is a stack buffer overflow vulnerability (CWE-121) in the D-Link DIR-816A2 router firmware version DIR-816A2_FWv1.10CNB05_R1B011D88210.img, specifically within the upload.cgi module responsible for handling firmware version information. The flaw occurs when the contents of /proc/version are read into a 512-byte buffer and then concatenated via sprintf() into a second 512-byte buffer that already holds a 29-byte constant string. Inputs from /proc/version exceeding 481 bytes overrun the second buffer, leading to the overflow.

The vulnerability carries a CVSS v3.1 base score of 8.8 (AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H), indicating network accessibility with low complexity and requiring only low privileges. An attacker able to control the content of /proc/version can trigger the overflow to potentially execute arbitrary code on the device, compromising confidentiality, integrity, and availability with high impact.

References include D-Link vendor sites such as http://d-link.com, https://www.dlink.com/en, and https://www.dlink.com/en/security-bulletin/, along with a detailed analysis at https://github.com/yifan20020708/SGTaint-0-day/blob/main/DLink/DLink-DIR-816/CVE-2025-60679.md, which may provide further guidance on advisories or patches.

EU & UK References

Vulnerability Data

A stack buffer overflow vulnerability exists in the D-Link DIR-816A2 router firmware DIR-816A2_FWv1.10CNB05_R1B011D88210.img in the upload.cgi module, which handles firmware version information. The vulnerability occurs because /proc/version is read into a 512-byte buffer and then concatenated using sprintf() into another…

more

512-byte buffer containing a 29-byte constant. Input exceeding 481 bytes triggers a stack buffer overflow, allowing an attacker who can control /proc/version content to potentially execute arbitrary code on the device.

CWE(s)

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.
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.
T1203 Exploitation for Client Execution Execution
Adversaries may exploit software vulnerabilities in client applications to execute code.
T1210 Exploitation of Remote Services Lateral Movement
Adversaries may exploit remote services to gain unauthorized access to internal systems once inside of a network.
T1212 Exploitation for Credential Access Credential Access
Adversaries may exploit software vulnerabilities in an attempt to collect credentials.
Derived from this CVE’s CWE(s) via the direct CWE→ATT&CK cross-walk.

CVEs Like This One

CVE-2025-61577Same product: Dlink Dir-816
CVE-2026-4183Same product: Dlink Dir-816
CVE-2025-5622Same product: Dlink Dir-816
CVE-2026-4181Same product: Dlink Dir-816
CVE-2025-5630Same product: Dlink Dir-816
CVE-2025-5623Same product: Dlink Dir-816
CVE-2025-5624Same product: Dlink Dir-816
CVE-2026-4184Same product: Dlink Dir-816
CVE-2026-4182Same product: Dlink Dir-816
CVE-2024-57682Same product: Dlink Dir-816

Affected Assets

dlink
dir-816 firmware
1.10cnb05_r1b011d88210

Mitigating Controls

Control response

Prevent
Stop it (NIST 800-53)

Detect
Catch it (NIST detect / respond)

Harden
Shrink the surface (DISA STIG)
  • 2 hardening rules · 2 OS baselines
Validate
Prove the fix (OWASP ASVS)

Mitigating Controls (NIST 800-53 r5) AI

Developer testing and analysis can discover stack-buffer overflows before deployment.

Input validation directly stops untrusted data from exceeding stack buffer bounds.

Memory-protection mechanisms limit the ability to execute injected code after a stack overflow.

Secure-engineering principles include bounds-checked coding and safe buffer handling that avoid introducing the 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-development practices directly prevent introduction of stack buffer overflows.

ID.RA-01 partial match
prevents

Vulnerability scanning can discover stack buffer overflows but does not prevent their introduction.

PR.PS-02 partial match
prevents

Patching eliminates known instances of the weakness after discovery.

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.

finds

Security testing (fuzzing, static analysis) detects stack overflows before release.

prevents

Secure SDLC mandates buffer-safety practices that directly prevent stack overflows.

prevents

Application security requirements can specify buffer-size and input-validation rules.

prevents

Secure architecture principles include memory-safety and least-privilege stack usage.

prevents

Secure coding standards explicitly forbid unsafe buffer handling that causes CWE-121.

none

Change-management gates can enforce security reviews that catch buffer issues.

Hardening callouts derived

Configuration rules from DISA STIG baselines that bear on weaknesses of the type cited by this CVE. Each rule is shown with the relationship its mapping actually records, against the CWE it was authored against. Derived via CVE→CWE over `controls_xwalks` (authoritative rows only; rows rated `none` are excluded).

Oracle Linux 8 (1 rule)
  • V-248594 OL 8 must implement address space layout randomization (ASLR) to protect its memory from unauthorized code execution. prevents CWE-121
Oracle Linux 9 (1 rule)
  • V-271452 OL 9 must use a Linux Security Module configured to enforce limits on system services. prevents CWE-121

References