ASKEY|modem - Stack-based Buffer Overflow
Priority MEDIUM 50CWE-121Published · Updated
Key facts
- Attack vector
- Network
- Privileges required
- None
- User interaction
- None
- Attack complexity
- Low
- Attack requirements
- None
- Impact type
- Code execution
- Confidentiality · integrity · availability
- High · High · High
- Fix status
- Fixed
Attack profile from CVSS 4.0 · CNA. Fix status from CNA. Impact type from CWE-121 and the CVSS impact.
Summary
Certain modem models developed by Askey has a Stack-based Buffer Overflow vulnerability, allowing unauthenticated remote attackers to control the program's execution flow and potentially execute arbitrary code.
Why it matters now
Exploitation None reported CISA SSVC · not in CISA KEV
EPSS 0.00955 61st percentileScored 2026-11-07
Fix Fixed RTF8207w (ASKEY): R82XXR250718RTF8217 (ASKEY): R82XXR250718
SSVC decision points
CISA ADP · SSVC 2.0.3
- Exploitation
- None
- Automatable
- Yes
- Technical impact
- Total
The decision (Track, Attend, Act) also depends on your mission and well-being impact; see CISA's SSVC guide.
Affected products
Remediation
- Fix · CNA RTF8207w (ASKEY) Fixed in R82XXR250718
- Fix · CNA RTF8217 (ASKEY) Fixed in R82XXR250718
Timeline
- 2026-10-02 Threatist record created from CVE-2025-7921
- 2026-10-03 Alias added: GHSA-r7rh-8pmr-qq23
References
More ASKEY vulnerabilities
- TI-2022-23292 An issue in ASKEY router RTF3505VW-N1 BR_SV_g000_R3505VMN1001_s32_7 allows attackers to… CVSS 3.1HIGH 7.8
- TI-2020-12106 Network Analysis functionality in Askey AP5100W_Dual_SIG_1.01.097 and all prior versions… CVSS 3.1CRITICAL 9.8
- TI-2020-16027 Askey AP5100W_Dual_SIG_1.01.097 and all prior versions use a weak password at the… CVSS 3.1CRITICAL 9.8
- TI-2020-06907 An issue was discovered on Askey AP4000W TDC_V1.01.003 devices. CVSS 3.1CRITICAL 9.8
- TI-2020-17388 Askey Fiber Router RTF3505VW-N1 BR_SV_g000_R3505VWN1001_s32_7 devices allow Remote Code… CVSS 3.1HIGH 8.8
- TI-2024-05019 ASKEY 5G NR Small Cell - Command Injection CVSS 3.1HIGH 7.2
Sources
- CVE-2025-7921 · CVE Program
- CVE-2025-7921 · NVD
- FIRST EPSS
- GHSA-r7rh-8pmr-qq23 · GitHub Advisory Database · CC BY 4.0
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