CVE-2025-1876Public exploitNetwork attack vector

Memory corruption via oversized Authorization header

Published Mar 3, 2025 · Updated Mar 4, 2025

Stack-based buffer overflow in the HTTP Header Handler in D-Link DAP-1562 1.10 allows remote attackers to corrupt memory via Authorization. The http_request_parse function fails to enforce stack-buffer bounds while parsing an oversized Authorization header. No authentication or user interaction is required; the published record does not establish whether the overflow only crashes the device or permits code execution.

CVSS severity9.8
Critical
EPSS probability3.48%
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 the HTTP Header Handler in D-Link DAP-1562 1.10 allows remote attackers to corrupt memory via Authorization. The http_request_parse function fails to enforce stack-buffer bounds while parsing an oversized Authorization header. No authentication or user interaction is required; the published record does not establish whether the overflow only crashes the device or permits code execution.

The record

CVE
CVE-2025-1876
Published
Mar 3, 2025
Updated
Mar 4, 2025
Vendor
D-Link
Product
DAP-1562
Classifications
CWE-787, CWE-121, CWE-119, T1190
Attack vector
network
Privileges
unauthenticated

Timeline

How it unfolded

  1. Mar 3, 2025CVE publishedPublication date reported by the CVE source.
  2. Mar 4, 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=1.10

What conditions does exploitation require?

Attack vectornetwork
Required privilegesunauthenticated

What is affected?

D-Link · DAP-1562version=1.10

Published CVSS scores

7.3VulDBCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:L
6.9VulDBCVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:L/VI:L/VA:L/SC:N/SI:N/SA:N
9.8NIST NVDCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
7.5VulDBAV:N/AC:L/Au:N/C:P/I:P/A:P

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
Privilegesunauthenticated
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
T1190Exploit Public-Facing Application

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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