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CVE-2023-51626

D-Link DCS-8300LHV2 RTSP ValidateAuthorizationHeader Username Stack-Based Buffer Overflow Remote Code Execution Vulnerability

HIGH
8.8
CVSS Score
Published: May 3, 2024 at 02:15 AM UTC
Updated: June 17, 2026 at 06:41 AM UTC
2 products affected across 1 vendorDcs 8300LHV2 FirmwareDCS-8300LHV2

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Severity
HIGH8.8
Exploit prediction
EPSS 1%
SSVC
No known exploit

Description

D-Link DCS-8300LHV2 RTSP ValidateAuthorizationHeader Username Stack-Based Buffer Overflow Remote Code Execution Vulnerability. This vulnerability allows network-adjacent attackers to execute arbitrary code on affected installations of D-Link DCS-8300LHV2 IP cameras. Authentication is not required to exploit this vulnerability. The specific flaw exists within the handling of the Authorization header by the RTSP server, which listens on TCP port 554. The issue results from the lack of proper validation of the length of user-supplied data prior to copying it to a fixed-length stack-based buffer. An attacker can leverage this vulnerability to execute code in the context of root. Was ZDI-CAN-21320.

Affected

Our own answer: ranges merged, affected separated from platform-only, with confidence and review flags.

Dcs 8300LHV2 Firmware· D-Link
95%
v < 1.07.02
Affected range stops below 1.07.02, so it looks safe — our inference, not a vendor statement
dlink-dcs-8300lhv2 (same device)
DCS-8300LHV2· D-Link
80%
1.06.01

Remediation

No guide yet

No remediation guidance has been written for this CVE yet. What the record does show:

Patch and advisory references

References (2)

Vendor Advisory
Source: [email protected]
https://supportannouncement.us.dlink.com/announcement/publication.aspx?name=SAP10370
x_research-advisoryThird Party Advisory
Source: [email protected]
https://www.zerodayinitiative.com/advisories/ZDI-24-046/

SSVC — Action Prioritization

SSVCNo known exploitNot automatableTotal impact

SSVC signals action urgency (what to patch first), separate from CVSS which measures severity.

CVSS

8.8HIGH[email protected]
Attack Vector
ADJACENT_NETWORK
Complexity
LOW
Privileges
NONE
User Interaction
NONE
Scope
UNCHANGED
Confidentiality
HIGH
Integrity
HIGH
Availability
HIGH
Vector?

Quick Info

StatusANALYZED
CWE
CWE-121CWE-787

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