CVE-2025-5215Public exploitNetwork attack vector

Camera crash via malformed Authorization value

Published May 27, 2025 · Updated May 28, 2025

Stack-based buffer overflow in D-Link DCS-5020L 1.01_B2 allows remote attackers to crash the camera via a crafted HTTP request. websReadEvent in /rame/ptdc.cgi keeps advancing while parsing a long malformed Authorization value and writes beyond its stack buffer. Reaching the CGI endpoint over the network is sufficient in NVD's assessment, while the CNA rates low privileges; the demonstrated consequence is a process segmentation fault.

CVSS severity9.8
Critical
EPSS probability1.35%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Stack-based buffer overflow in D-Link DCS-5020L 1.01_B2 allows remote attackers to crash the camera via a crafted HTTP request. websReadEvent in /rame/ptdc.cgi keeps advancing while parsing a long malformed Authorization value and writes beyond its stack buffer. Reaching the CGI endpoint over the network is sufficient in NVD's assessment, while the CNA rates low privileges; the demonstrated consequence is a process segmentation fault.

The record

CVE
CVE-2025-5215
Published
May 27, 2025
Updated
May 28, 2025
Vendor
D-Link
Product
DCS-5020L
Classifications
CWE-787, CWE-121, CWE-119, T1499.004
Attack vector
network
Privileges
authenticated

Timeline

How it unfolded

  1. May 27, 2025CVE publishedPublication date reported by the CVE source.
  2. May 28, 2025Record updatedLatest update available in the CVE record.

Exploitability

Present is not the same as exploitable

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Is a vulnerable build present?

Compare these published version ranges with your installed build and any vendor patches.

  1. Affected versionversion=1.01_B2

What conditions does exploitation require?

Attack vectornetwork
Required privilegesauthenticated

What is affected?

D-Link · DCS-5020Lversion=1.01_B2

Published CVSS scores

8.8VulDBCVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
8.8VulDBCVSS:3.0/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
8.7VulDBCVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N
9.0VulDBAV:N/AC:L/Au:S/C:C/I:C/A:C
9.8NIST NVDCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

CVSS describes severity. EPSS estimates exploitation probability.

Attacks

What attackers are doing with it

Daily unique IPs observed by Shadowserver honeypots for known exploited vulnerabilities (KEVs). Missing observations do not establish an absence of attacks.

Daily unique IPsNo honeypot observations are available for this CVE in the selected window.

No observations available

Sep 9, 2026Sep 15, 2026
Latest reporting daySep 15, 2026
Latest daily unique IPsUnavailable
Prior 30-day averageUnavailable
SourceShadowserver honeypots (KEV)
Vectornetwork
Privilegesauthenticated
Known exploitationUnconfirmed
Public exploitPublished

Weakness, pattern, technique

CWE-787Out-of-bounds Write
CWE-121Stack-based Buffer Overflow
CWE-119Improper Restriction of Operations within the Bounds of a Memory Buffer
T1499.004Application or System Exploitation

Public exploit references

Labels summarize the accepted research assessment. They do not indicate a test against your environment.

Technologies

Your stack

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Your stack

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