Stack-based Buffer Overflow in Askey Modems
CVE-2025-7921

9.3CRITICAL

Key Information:

Vendor

Askey

Status
Rtf8207w
Rtf8217
Vendor
CVE Published:
21 July 2025

What is CVE-2025-7921?

A stack-based buffer overflow vulnerability exists in certain Askey modem models. This flaw enables unauthenticated remote attackers to manipulate the program's execution flow, potentially leading to the execution of arbitrary code. This vulnerability exposes affected devices to significant security risks, allowing malicious actors to compromise network integrity and privacy.

Affected Version(s)

RTF8207w 0

RTF8217 0

References

https://www.twcert.org.tw/tw/cp-132-10268-1583b-1.html
third-party-advisory
https://www.twcert.org.tw/en/cp-139-10269-c9839-2.html
third-party-advisory

CVSS V4

Score:
9.3
Severity:
CRITICAL
Confidentiality:
High
Integrity:
High
Availability:
High
Attack Vector:
Network
Attack Complexity:
Low
Attack Required:
None
Privileges Required:
Undefined
User Interaction:
None

Timeline

  • Vulnerability published

  • Vulnerability Reserved

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CVE-2025-7921 : Stack-based Buffer Overflow in Askey Modems