HOMEVULNERABILITIESCVE-2023-45576
CRITICAL

CVE-2023-45576

CWE-787Published: October 16, 2023· Updated: Jun 17, 2026

9.8
CVSS v3.1

Official Description

Buffer Overflow vulnerability in D-Link device DI-7003GV2.D1 v.23.08.25D1 and before, DI-7100G+V2.D1 v.23.08.23D1 and before, DI-7100GV2.D1 v.23.08.23D1, DI-7200G+V2.D1 v.23.08.23D1 and before, DI-7200GV2.E1 v.23.08.23E1 and before, DI-7300G+V2.D1 v.23.08.23D1, and DI-7400G+V2.D1 v.23.08.23D1 and before allows a remote attacker to execute arbitrary code via the remove_ext_proto/remove_ext_port parameter of the upnp_ctrl.asp function.

NVD Source

Risk Analysis

This vulnerability is a buffer overflow in the upnp_ctrl.asp function of various D-Link devices. It allows a remote, unauthenticated attacker to execute arbitrary code, warranting a critical CVSS score of 9.8.

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

Recommended Action

Users should check for and apply the latest firmware updates provided by D-Link for the affected models.

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-2023-45576 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.

From a weakness classification perspective (CWE-787): Out-of-bounds write vulnerabilities can lead to data corruption, crashes, or arbitrary code execution.

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

dlink14 product(s)
di-7003g firmwaredi-7003gdi-7100g\+ firmwaredi-7100g\+di-7100g firmwaredi-7100gdi-7200g\+ firmwaredi-7200g\+di-7200g firmwaredi-7200gdi-7300g\+ firmwaredi-7300g\++2
Source: NVD CPE · 14 total CPE entries

Exploit & PoC Resources

NO KNOWN EXPLOITNo public exploit confirmed at this time
Exploit-DB
Offensive Security exploit database
GitHub PoC Search
Community PoC repositories
Rapid7 / Metasploit
Metasploit module search
PacketStorm
Security advisories & exploits
NVD Detail
Official NIST entry
MITRE CVE
CVE Program entry
External links open in a new tab. Always verify in a controlled environment before use.

Official Patches & Advisories

ADVISORYhttps://github.com/Archerber/bug_submit/blob/main/D-Link/DI-7xxxx/bug3.md
ADVISORYhttps://github.com/Archerber/bug_submit/blob/main/D-Link/DI-7xxxx/bug3.md

All References (2)

→
https://github.com/Archerber/bug_submit/blob/main/D-Link/DI-7xxxx/bug3.mdExploit · Third Party Advisory
→
https://github.com/Archerber/bug_submit/blob/main/D-Link/DI-7xxxx/bug3.mdExploit · Third Party Advisory

Quick Facts

CVE IDCVE-2023-45576
CVSS Score9.8 / 10
SeverityCRITICAL
WeaknessCWE-787
CISA KEVNo
Affected1 vendor(s)
PublishedOct 16, 2023

Related CVEs (CWE-787)

CVE-2012-3957
10.0
CVE-2018-10718
10.0
CVE-2018-6692
10.0
CVE-2020-11897
10.0
CVE-2015-0235
10.0
CVE-2018-17160
10.0

Recommended Actions

  • →Apply vendor patches immediately
  • →Monitor CVE-2023-45576 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.
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