CVE-2025-1877: A vulnerability, which was classified as critical, was found in D-Link DAP-1562 1.10

This month

MEDIUM 6.5MITIGATE

CVE-2025-1877 is a medium-severity flaw (CVSS 6.5) affecting dap-1562 firmware. Below: why it ranks where it does, which versions are affected, what to do, and the exact commands.

A vulnerability, which was classified as critical, was found in D-Link DAP-1562 1.10. This affects the function pure_auth_check of the component HTTP POST Request Handler. The manipulation of the argument a1 leads to null pointer dereference. It is possible to initiate the attack remotely. The exploit has been disclosed to the public and may be used. This vulnerability only affects products that are no longer supported by the maintainer.

Why this priority

Public exploit reference

No fix is published yet: follow the downgrade or mitigation steps.

Risk facts

CVSS score	6.5 (Medium)
Attack vector	Network (remote)
Attack complexity	Low
Privileges needed	Low
User interaction	None
EPSS exploit chance	1.1% (top 35%)
CISA exploited list	No
Weakness	CWE-404, CWE-476
Published	2025-03-03
Last modified	2026-06-17

Publisher (CNA): VulDB · Vendor: dlink

Last updated 2026-06-17 · Sources: CVE Program, NVD, CISA KEV, EPSS and vendor advisories · How we score

Am I affected?

Timeline

2025-03-03 19:15 UTCPublished CVE record published
2026-06-17 08:40 UTCUpdated Record last modified

dlink dap-1562 firmware MITIGATE

Affected: 1.10

Fixed in: no fixed release known

Safe to downgrade to: a release before 1.10

Check your OS release

cat /etc/os-release; uname -r

Debian / Ubuntu

sudo apt update && sudo apt full-upgrade

RHEL / Amazon Linux / Fedora

sudo dnf upgrade --refresh

Windows

Install the latest cumulative update from Windows Update

If no patch exists yet

OS downgrades are not safe. Apply the vendor mitigation from the advisory and restrict exposure.

Verify at the official source NVD · CVE Program · Report a problem with this page
Scores and fixes here are computed automatically from those and other public sources. Confirm with the vendor advisory before changing production systems.

Quick answers

How do I fix CVE-2025-1877?

dap-1562 firmware: mitigate or apply the listed mitigation. Exact commands for each OS are on this page.

Is CVE-2025-1877 being exploited?

CVE-2025-1877 is not on the CISA Known Exploited Vulnerabilities list at the time of the last update. Check again, as this can change.

What does CVE-2025-1877 affect?

CVE-2025-1877 affects dap-1562 firmware. Severity is medium (CVSS 6.5). A vulnerability, which was classified as critical, was found in D-Link DAP-1562 1.10. This affects the function pure_auth_check of the component HTTP POST Request Handler. The manipulation of the argument a1 leads to null pointer dereferenc

How urgent is CVE-2025-1877?

Priority 44/100. Public exploit reference

Software pages

D-Link vulnerabilities

Related CVEs

CVE-2025-1876 HIGH 7.3 MITIGATE A vulnerability, which was classified as critical, has been found in D-Link DAP-1562 1.10

References

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