CVE-2025-1877Public exploitNetwork attack vector

Device crash via crafted pure_auth_check argument

Published Mar 3, 2025 · Updated Mar 3, 2025

Null pointer dereference in the HTTP POST handler in D-Link DAP-1562 1.10 allows remote authenticated users to crash the device. The pure_auth_check function dereferences a null pointer when the a1 argument is crafted, terminating request processing. The CNA requires low privileges while NVD assesses no authentication; published metrics establish only availability impact despite D-Link describing credential disclosure.

CVSS severity7.1
High
EPSS probability1.04%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
Coverage for this vulnerability

See if you're affected

Explore vulnerability checks for your environment with Hinoki.

Book a demo

Summary

What happened

Null pointer dereference in the HTTP POST handler in D-Link DAP-1562 1.10 allows remote authenticated users to crash the device. The pure_auth_check function dereferences a null pointer when the a1 argument is crafted, terminating request processing. The CNA requires low privileges while NVD assesses no authentication; published metrics establish only availability impact despite D-Link describing credential disclosure.

The record

CVE
CVE-2025-1877
Published
Mar 3, 2025
Updated
Mar 3, 2025
Vendor
D-Link
Product
DAP-1562
Classifications
CWE-476, CWE-404, T1499
Attack vector
network
Privileges
authenticated

Timeline

How it unfolded

  1. Mar 3, 2025CVE publishedPublication date reported by the CVE source.
  2. Mar 3, 2025Record updatedLatest update available in the CVE record.

Exploitability

Present is not the same as exploitable

Compare your product and version with the public record. A matching version still requires validation against your environment.

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 privilegesauthenticated

What is affected?

D-Link · DAP-1562version=1.10

Published CVSS scores

6.5VulDBCVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H
6.8VulDBAV:N/AC:L/Au:S/C:N/I:N/A:C
7.5NVDCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
7.1VulDBCVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N

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 10, 2026Sep 16, 2026
Latest reporting daySep 16, 2026
Latest daily unique IPsUnavailable
Prior 30-day averageUnavailable
SourceShadowserver honeypots (KEV)
Vectornetwork
Privilegesauthenticated
Known exploitationUnconfirmed
Public exploitPublished

Weakness, pattern, technique

CWE-476NULL Pointer Dereference
CWE-404Improper Resource Shutdown or Release
T1499Endpoint Denial of Service

Public exploit references

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

Technologies

Your stack

See the directory against your own environment.

Your stack

Check the software in your environment

Book a demo to see how Hinoki identifies affected software and validates exploitability in your environment.

Book a demo