HOMEVULNERABILITIESCVE-2023-39671
CRITICAL

CVE-2023-39671

CWE-120Published: August 18, 2023· Updated: Jun 17, 2026

9.8
CVSS v3.1

Official Description

D-Link DIR-880 A1_FW107WWb08 was discovered to contain a buffer overflow via the function FUN_0001be68.

NVD Source

Risk Analysis

D-Link DIR-880L routers contain a buffer overflow vulnerability in a specific function, which could allow remote attackers to execute arbitrary code. This critical vulnerability has a CVSS score of 9.8.

There is no public exploit known for this vulnerability, and it is not in the CISA KEV catalog. It is remotely exploitable with low complexity.

Recommended Action

Apply the latest firmware updates from D-Link. Disable remote management features to mitigate the risk of unauthorized access.

Generated by the CTIWATCH analysis pipeline from this CVE's metadata (CVSS, EPSS, KEV status, exploit intelligence). Verify against vendor advisories before acting.

Technical Analysis

CVE-2023-39671 can be exploited remotely over the network without requiring physical or adjacent access, significantly expanding the attack surface for threat actors.

The vulnerability requires no privileges and no user interaction, making it a prime target for automated exploitation campaigns and worm-like propagation.

A successful exploit results in complete confidentiality breach (data exposure), full integrity compromise (data manipulation), availability disruption (denial of service), with a CVSS base score of 9.8.

CVSS v3.1 Vector Breakdown

Exploitability
Attack VectorNetwork
Attack ComplexityLow
Privileges Req.None
User InteractionNone
ScopeUnchanged
Impact
ConfidentialityHigh
IntegrityHigh
AvailabilityHigh
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

Affected Vendors & Products

dlink2 product(s)
dir-880l a1 firmwaredir-880l a1
Source: NVD CPE · 2 total CPE entries

Exploit & PoC Resources

NO KNOWN EXPLOITNo public exploit confirmed at this time
External links open in a new tab. Always verify in a controlled environment before use.

Official Patches & Advisories

All References (6)

Quick Facts

CVE IDCVE-2023-39671
CVSS Score9.8 / 10
SeverityCRITICAL
WeaknessCWE-120
CISA KEVNo
Affected1 vendor(s)
PublishedAug 18, 2023

Related CVEs (CWE-120)

Recommended Actions

  • Apply vendor patches immediately
  • Monitor CVE-2023-39671 in threat intel feeds
  • Review IDS/IPS signatures for exploitation attempts
Data sourced from NVD (NIST), CISA KEV, and EPSS (FIRST). Analysis generated by CTIWatch. CVE data is provided under the NVD usage policy.