CVE-2025-7921 json
ASKEY｜modem - Stack-based Buffer Overflow
published 2025-07-21 15 mo ago modified 2026-06-17 4 mo ago also EUVD-2025-22058
- cvss
- 9.8
- version 3.1, CNA
- cisa kev
- Not listed
- not in CISA's catalog
- epss
- 1.0%
- EPSS 1.0% chance of exploitation in 30 days, percentile 61%
- public exploits
- 0
- none known
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.
Patch / fix
- ASKEY RTF8207w R82XXR250718
- ASKEY RTF8217 R82XXR250718
CISA SSVC
- Exploitation
- none
- Automatable
- yes
- Technical impact
- total
- Assessed
- 15 mo ago
Exploit prediction
0.95% chance of exploitation in the next 30 days, higher than 61% of all scored CVEs (FIRST EPSS, 2026-11-08).
CVSS scores
| assigned by | version | score | vector |
|---|---|---|---|
| CNA | 4.0 | 9.3 | CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N |
| CNA | 3.1 | 9.8 | CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H |
| CNA | 4.0 | 9.3 | CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X |
Affected products
- ASKEY RTF8207w
- ASKEY RTF8217
Classification
- Weakness
-
- CWE-121 Stack-based Buffer Overflow
References
-
twcert.org.tw
/tw/cp-132-10268-1583b-1.html
third-party-advisory
-
twcert.org.tw
/en/cp-139-10269-c9839-2.html
third-party-advisory
Sources
- CVE List CVE-2025-7921
- NVD CVE-2025-7921
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