CVE-2025-21477
Improper Input Validation in Modem
7.5 High
Transient DOS while processing CCCH data when NW sends data with invalid length.
Attack profile
How easy it is to exploit
- Attack vector
- Network
- Complexity
- Low
- Privileges needed
- None
- User interaction
- None
What an attacker can affect
- Confidentiality
- None
- Integrity
- None
- Availability
- High
Exploit likelihood
0.26%Up 0.2 points since Aug 6, 2025
What each source reports
CVE List Score used
Improper Input Validation in Modem
Transient DOS while processing CCCH data when NW sends data with invalid length.
- Record
CVE-2025-21477- CVSS 3.1
- 7.5 High
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H - Weakness
- CWE-20
- Updated
- 2026-11-02
EUVDEUVD-2025-23799
Transient DOS while processing CCCH data when NW sends data with invalid length.
- Record
EUVD-2025-23799- CVSS 3.1
- 7.5 High
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H - Updated
- 2026-11-02
GitHub AdvisoriesGHSA-4j97-w2pw-9q28
Transient DOS while processing CCCH data when NW sends data with invalid length.
Transient DOS while processing CCCH data when NW sends data with invalid length.
- Record
GHSA-4j97-w2pw-9q28- CVSS 3.1
- 7.5 High
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H - Weakness
- CWE-20
- Updated
- 2026-11-02
NVD
Transient DOS while processing CCCH data when NW sends data with invalid length.
- Record
CVE-2025-21477- CVSS 3.1
- 7.5 High
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H - Weakness
- CWE-20
- Updated
- 2026-11-02
Affected products
- qualcomm 315 5g iot modem firmware
- qualcomm ar8035 firmware
- qualcomm fastconnect 6200 firmware
- qualcomm fastconnect 6700 firmware
- qualcomm fastconnect 6800 firmware
- qualcomm fastconnect 6900 firmware
- qualcomm fastconnect 7800 firmware
- qualcomm qca6391 firmware
- qualcomm qca6574a firmware
- qualcomm qca6584au firmware
- qualcomm qca6595au firmware
- qualcomm qca6696 firmware
Show 78 moreShow less
- qualcomm qca6698aq firmware
- qualcomm qca8081 firmware
- qualcomm qca8337 firmware
- qualcomm qcc710 firmware
- qualcomm qcm5430 firmware
- qualcomm qcm6490 firmware
- qualcomm qcn6024 firmware
- qualcomm qcn6224 firmware
- qualcomm qcn6274 firmware
- qualcomm qcn9024 firmware
- qualcomm qcs5430 firmware
- qualcomm qcs6490 firmware
- qualcomm qcs8550 firmware
- qualcomm qfw7114 firmware
- qualcomm qfw7124 firmware
- qualcomm sdx55 firmware
- qualcomm sdx57m firmware
- qualcomm sg8275p firmware
- qualcomm sm7250p firmware
- qualcomm sm7325p firmware
- qualcomm sm7675 firmware
- qualcomm sm7675p firmware
- qualcomm sm8550p firmware
- qualcomm sm8635 firmware
- qualcomm sm8635p firmware
- qualcomm snapdragon 480\+ 5g mobile platform \(sm4350-ac\) firmware
- qualcomm snapdragon 480 5g mobile platform firmware
- qualcomm snapdragon 4 gen 1 mobile platform firmware
- qualcomm snapdragon 690 5g mobile platform firmware
- qualcomm snapdragon 695 5g mobile platform firmware
- qualcomm snapdragon 765 5g mobile platform \(sm7250-aa\) firmware
- qualcomm snapdragon 765g 5g mobile platform \(sm7250-ab\) firmware
- qualcomm snapdragon 768g 5g mobile platform \(sm7250-ac\) firmware
- qualcomm snapdragon 778g\+ 5g mobile platform \(sm7325-ae\) firmware
- qualcomm snapdragon 778g 5g mobile platform firmware
- qualcomm snapdragon 780g 5g mobile platform firmware
- qualcomm snapdragon 782g mobile platform \(sm7325-af\) firmware
- qualcomm snapdragon 7c\+ gen 3 compute firmware
- qualcomm snapdragon 865\+ 5g mobile platform \(sm8250-ab\) firmware
- qualcomm snapdragon 865 5g mobile platform firmware
- qualcomm snapdragon 870 5g mobile platform \(sm8250-ac\) firmware
- qualcomm snapdragon 888\+ 5g mobile platform \(sm8350-ac\) firmware
- qualcomm snapdragon 888 5g mobile platform firmware
- qualcomm snapdragon 8\+ gen 1 mobile platform firmware
- qualcomm snapdragon 8\+ gen 2 mobile platform firmware
- qualcomm snapdragon 8 gen 1 mobile platform firmware
- qualcomm snapdragon 8 gen 2 mobile platform firmware
- qualcomm snapdragon 8 gen 3 mobile platform firmware
- qualcomm snapdragon auto 5g modem-rf firmware
- qualcomm snapdragon auto 5g modem-rf gen 2 firmware
- qualcomm snapdragon x55 5g modem-rf system firmware
- qualcomm snapdragon x62 5g modem-rf system firmware
- qualcomm snapdragon x65 5g modem-rf system firmware
- qualcomm snapdragon x70 modem-rf system firmware
- qualcomm snapdragon x72 5g modem-rf system firmware
- qualcomm snapdragon x75 5g modem-rf system firmware
- qualcomm video collaboration vc3 platform firmware
- qualcomm wcd9340 firmware
- qualcomm wcd9341 firmware
- qualcomm wcd9360 firmware
- qualcomm wcd9370 firmware
- qualcomm wcd9375 firmware
- qualcomm wcd9380 firmware
- qualcomm wcd9385 firmware
- qualcomm wcd9390 firmware
- qualcomm wcd9395 firmware
- qualcomm wcn3988 firmware
- qualcomm wcn6740 firmware
- qualcomm wcn6755 firmware
- qualcomm wsa8810 firmware
- qualcomm wsa8815 firmware
- qualcomm wsa8830 firmware
- qualcomm wsa8832 firmware
- qualcomm wsa8835 firmware
- qualcomm wsa8840 firmware
- qualcomm wsa8845 firmware
- qualcomm wsa8845h firmware
- qualcomm, inc. snapdragon
History
| Recorded | Changed | Sources |
|---|---|---|
| first indexed | CVE List, EUVD, GitHub Advisories, NVD |
Dates are when Every CVE recorded each change. Upstream dates may differ.
In short
CVE-2025-21477 is a high vulnerability (CVSS 7.5) in Qualcomm 315 5g Iot Modem Firmware, published August 6, 2025. No source lists public exploit code. EPSS puts the chance of exploitation in the next 30 days at 0.26%, the 17th percentile. No source names a fixed version.