High severity · published Aug 6, 2025
CVE-2025-21452
Transient DOS while processing a random-access response (RAR) with an invalid PDU length on LTE network
7.5
CVSS
0.2%
EPSS
No
On KEV
Description
Transient DOS while processing a random-access response (RAR) with an invalid PDU length on LTE network.
CVSS vector
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
Attack vector
Network
Complexity
Low
Privileges
None
User interaction
None
Confidentiality
None
Integrity
None
Availability
High
Scope
Unchanged
Exploitation
Is it being used?
Exploit prediction (EPSS)0.2% · higher than 13% of CVEs
Exploited in the wildNo evidence yet
CISA KEVNot listed
Ransomware campaign useNot known
Affected products
Which versions
35
315 5g Iot Modem Firmware · Qualcomm
All versions, or not specified · source: NVD
AF
Ar8035 Firmware · Qualcomm
All versions, or not specified · source: NVD
F6
Fastconnect 6200 Firmware · Qualcomm
All versions, or not specified · source: NVD
F6
Fastconnect 6700 Firmware · Qualcomm
All versions, or not specified · source: NVD
F6
Fastconnect 6800 Firmware · Qualcomm
All versions, or not specified · source: NVD
F6
Fastconnect 6900 Firmware · Qualcomm
All versions, or not specified · source: NVD
FF
Fsm10055 Firmware · Qualcomm
All versions, or not specified · source: NVD
QF
Qca6174a Firmware · Qualcomm
All versions, or not specified · source: NVD
QF
Qca6391 Firmware · Qualcomm
All versions, or not specified · source: NVD
QF
Qca6421 Firmware · Qualcomm
All versions, or not specified · source: NVD
QF
Qca6426 Firmware · Qualcomm
All versions, or not specified · source: NVD
QF
Qca6431 Firmware · Qualcomm
All versions, or not specified · source: NVD
References
NVD
https://nvd.nist.gov/vuln/detail/CVE-2025-21452
CVE.org
https://www.cve.org/CVERecord?id=CVE-2025-21452
Vendor Advisory
https://docs.qualcomm.com/product/publicresources/securitybulletin/august-2025-bulletin.html
More from 315 5g Iot Modem Firmware
7.8
CVE-2023-33107
Integer Overflow or Wraparound in Graphics Linux
7.8
CVE-2023-33063
Use After Free in DSP Services
9.8
CVE-2025-27034
Memory corruption while selecting the PLMN from SOR failed list
9.8
CVE-2023-22388
Memory Corruption in Multi-mode Call Processor while processing bit mask API
9.8
CVE-2023-22385
Memory Corruption in Data Modem while making a MO call or MT VOLTE call