CVE-2025-45862Public exploitNetwork attack vector

Authenticated web service crash via unchecked interface name

Published May 20, 2025 · Updated May 20, 2025

Buffer overflow in the formDhcpv6s handler in TOTOLINK A3002R 4.0.0-B20230531.1404 allows remote authenticated users to crash Boa. FUN_00451dc8 retrieves POST parameters and copies interfacenameds with strcpy without checking its length, overflowing a stack buffer. Exploitation requires a valid sessionCheck value plus enabled wan_enable and enable_dhcpv6s flags; the demonstrated consequence is a Boa process crash.

CVSS severity6.5
Medium
EPSS probability0.33%
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

Buffer overflow in the formDhcpv6s handler in TOTOLINK A3002R 4.0.0-B20230531.1404 allows remote authenticated users to crash Boa. FUN_00451dc8 retrieves POST parameters and copies interfacenameds with strcpy without checking its length, overflowing a stack buffer. Exploitation requires a valid sessionCheck value plus enabled wan_enable and enable_dhcpv6s flags; the demonstrated consequence is a Boa process crash.

The record

CVE
CVE-2025-45862
Published
May 20, 2025
Updated
May 20, 2025
Vendor
Unknown vendor
Product
Unknown product
Classifications
CWE-121
Attack vector
network
Privileges
authenticated

Timeline

How it unfolded

  1. May 20, 2025CVE publishedPublication date reported by the CVE source.
  2. May 20, 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?

Affected buildAffected product and version details are unavailable.

What conditions does exploitation require?

Attack vectornetwork
Required privilegesauthenticated

What is affected?

Affected products and versions are unavailable in this record.

Published CVSS scores

6.5CISA-ADPCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/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 9, 2026Sep 15, 2026
Latest reporting daySep 15, 2026
Latest daily unique IPsUnavailable
Prior 30-day averageUnavailable
SourceShadowserver honeypots (KEV)
Vectornetwork
Privilegesauthenticated
Known exploitationUnconfirmed
Public exploitPublished

Weakness, pattern, technique

CWE-121Stack-based Buffer Overflow

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