CVE-2025-25742Public exploitNetwork attack vector

Unauthenticated code execution via unchecked password copy

Published Feb 12, 2025 · Updated Mar 5, 2025

Stack-based buffer overflow in D-Link DIR-853 A1 firmware 1.20B07 allows remote attackers to execute code via AccountPassword. In prog.cgi's SetSysEmailSettings path, decrypted AccountPassword data is copied into a stack buffer by an unbounded loop without length validation. An unauthenticated network request is sufficient; successful exploitation can corrupt memory, crash the router, or seize control of the device.

CVSS severity9.8
Critical
EPSS probability0.63%
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 DIR-853 A1 firmware 1.20B07 allows remote attackers to execute code via AccountPassword. In prog.cgi's SetSysEmailSettings path, decrypted AccountPassword data is copied into a stack buffer by an unbounded loop without length validation. An unauthenticated network request is sufficient; successful exploitation can corrupt memory, crash the router, or seize control of the device.

The record

CVE
CVE-2025-25742
Published
Feb 12, 2025
Updated
Mar 5, 2025
Vendor
Unknown vendor
Product
Unknown product
Classifications
CWE-787, T1190
Attack vector
network
Privileges
unauthenticated

Timeline

How it unfolded

  1. Feb 12, 2025CVE publishedPublication date reported by the CVE source.
  2. Mar 5, 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?

Affected buildAffected product and version details are unavailable.

What conditions does exploitation require?

Attack vectornetwork
Required privilegesunauthenticated

What is affected?

Affected products and versions are unavailable in this record.

Published CVSS scores

9.8NIST NVDCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
9.8CISA-ADPCVSS: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 10, 2026Sep 16, 2026
Latest reporting daySep 16, 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
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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