What is the CVSS score of CVE-2025-70220?

CVE-2025-70220 has a CVSS 3.1 base score of 9.8 (Critical). CVSS vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H. EPSS exploitation probability: 0.1%.

Which versions of Dir 513 Firmware are affected by CVE-2025-70220?

A critical stack buffer overflow vulnerability (CVE-2025-70220, CVSS 9.8) affects D-Link DIR-513 v1.10 routers with no available patch and active public exploits in the wild.

Is there a public PoC exploit available for CVE-2025-70220?

Yes, a public proof-of-concept exploit is available for CVE-2025-70220. Prioritise patching immediately. EPSS: 0.1%.

How to fix or mitigate CVE-2025-70220?

Within 24 hours: Inventory all D-Link DIR-513 v1.10 devices in production and isolate affected units from critical network segments; notify all stakeholders of exposure. Within 7 days: Implement network-level compensating controls (WAF rules blocking /goform/formAutoDetecWAN_wizard4 requests, network segmentation isolating these devices) and begin procurement of replacement router models. Within 30 days: Complete migration away from DIR-513 v1.10 hardware or maintain strict air-gapped deployment with continuous monitoring.

Dir 513 Firmware CVE-2025-70220

CRITICAL

Stack-based Buffer Overflow (CWE-121)

2026-03-04 cve@mitre.org

Buffer Overflow D-Link Dir 513 Firmware

9.8

CVSS 3.1

CVSS VectorNVD

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

Attack Vector

Network

Attack Complexity

Low

Privileges Required

None

User Interaction

None

Scope

Unchanged

Confidentiality

High

Integrity

High

Availability

High

Lifecycle Timeline

Analysis Generated

Mar 12, 2026 - 22:05 vuln.today

PoC Detected

Mar 06, 2026 - 17:51 vuln.today

Public exploit code

CVE Published

Mar 04, 2026 - 18:16 nvd

CRITICAL 9.8

DescriptionNVD

Stack buffer overflow vulnerability in D-Link DIR-513 v1.10 via the curTime parameter to goform/formAutoDetecWAN_wizard4.

AnalysisAI

Stack buffer overflow in D-Link DIR-513 v1.10 via the curTime parameter to goform/formAutoDetecWAN_wizard4. Part of a family of 15+ critical buffer overflows in this router.

Technical ContextAI

CWE-121 stack buffer overflow via curTime parameter. The DIR-513 has numerous buffer overflow vulnerabilities across its web management interface.

RemediationAI

Replace the D-Link DIR-513 — it is end of life. No patches will be released.

More from same product – last 7 days

CVE-2026-4377 MEDIUM This Month

6.0 May 28

Weak default credential generation in the D-Link DWR-X1820 router exposes administrative access to adjacent-network atta

CVE-2025-70220 vulnerability details – vuln.today

Back

Dir 513 Firmware CVE-2025-70220

CVSS VectorNVD

Lifecycle Timeline

DescriptionNVD

AnalysisAI

Technical ContextAI

RemediationAI

More from same product – last 7 days

Share

External POC / Exploit Code