CVE-2025-4859Network attack vector

Browser script execution via unneutralized f_mac

Published May 18, 2025 · Updated May 19, 2025

Cross-site scripting in D-Link DAP-2695 firmware 120b36r137_ALL_en_20210528 allows remote authenticated users to inject script via f_mac. The MAC Bypass Settings page passes the f_mac value through /adv_macbypass.php without effective neutralization before browser rendering. Administrative privileges and interaction by another user are required; exploitation alters page content in that user's browser.

CVSS severity4.8
Medium
EPSS probability0.94%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Cross-site scripting in D-Link DAP-2695 firmware 120b36r137_ALL_en_20210528 allows remote authenticated users to inject script via f_mac. The MAC Bypass Settings page passes the f_mac value through /adv_macbypass.php without effective neutralization before browser rendering. Administrative privileges and interaction by another user are required; exploitation alters page content in that user's browser.

The record

CVE
CVE-2025-4859
Published
May 18, 2025
Updated
May 19, 2025
Vendor
D-Link
Product
DAP-2695
Classifications
CWE-94, CWE-79
Attack vector
network
Privileges
admin

Timeline

How it unfolded

  1. May 18, 2025CVE publishedPublication date reported by the CVE source.
  2. May 19, 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=120b36r137_ALL_en_20210528

What conditions does exploitation require?

Attack vectornetwork
Required privilegesadmin

What is affected?

D-Link · DAP-2695version=120b36r137_ALL_en_20210528

Published CVSS scores

2.4VulDBCVSS:3.1/AV:N/AC:L/PR:H/UI:R/S:U/C:N/I:L/A:N
4.8VulDBCVSS:4.0/AV:N/AC:L/AT:N/PR:H/UI:P/VC:N/VI:L/VA:N/SC:N/SI:N/SA:N
3.3VulDBAV:N/AC:L/Au:M/C:N/I:P/A:N
4.8NVDCVSS:3.1/AV:N/AC:L/PR:H/UI:R/S:C/C:L/I:L/A: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
Privilegesadmin
Known exploitationUnconfirmed
Public exploitUnconfirmed

Weakness, pattern, technique

CWE-94Improper Control of Generation of Code ('Code Injection')
CWE-79Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting')

Public exploit references

No public exploit references are available in this record.

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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