CVE-2025-25664Public exploitNetwork attack vector

Unauthenticated service interruption via shareSpeed stack overflow

Published Feb 20, 2025 · Updated Feb 21, 2025

Stack overflow in Tenda AC8 V4 firmware 16.03.34.06 allows remote attackers to corrupt memory via a crafted shareSpeed parameter. The sub_49E098 parameter handler writes attacker-controlled shareSpeed data beyond a stack buffer; public sources do not disclose the exact copy operation. Network access is sufficient and requires no authentication or user interaction; successful exploitation corrupts process memory and interrupts the service.

CVSS severity9.8
Critical
EPSS probability0.55%
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

Stack overflow in Tenda AC8 V4 firmware 16.03.34.06 allows remote attackers to corrupt memory via a crafted shareSpeed parameter. The sub_49E098 parameter handler writes attacker-controlled shareSpeed data beyond a stack buffer; public sources do not disclose the exact copy operation. Network access is sufficient and requires no authentication or user interaction; successful exploitation corrupts process memory and interrupts the service.

The record

CVE
CVE-2025-25664
Published
Feb 20, 2025
Updated
Feb 21, 2025
Vendor
Unknown vendor
Product
Unknown product
Classifications
CWE-787, CWE-120, T1190
Attack vector
network
Privileges
unauthenticated

Timeline

How it unfolded

  1. Feb 20, 2025CVE publishedPublication date reported by the CVE source.
  2. Feb 21, 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 privilegesunauthenticated

What is affected?

Affected products and versions are unavailable in this record.

Published CVSS scores

9.8NVDCVSS: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
CWE-120Buffer Copy without Checking Size of Input ('Classic Buffer Overflow')
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

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