High severity · published Jul 6, 2026
CVE-2026-21383
Reusing a Nonce, Key Pair in Encryption in HLOS
7.1
CVSS
0.1%
EPSS
No
On KEV
Description
Cryptographic Issue when using a static initialization vector for AES-GCM key wrapping, which requires a unique value for each call to ensure security.
CVSS vector
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:N
Attack vector
Local
Complexity
Low
Privileges
Low
User interaction
None
Confidentiality
High
Integrity
High
Availability
None
Scope
Unchanged
Exploitation
Is it being used?
Exploit prediction (EPSS)0.1% · higher than 1% of CVEs
Exploited in the wildNo evidence yet
CISA KEVNot listed
Ransomware campaign useNot known
Affected products
Which versions
SN
Snapdragon · Qualcomm, Inc.
FastConnect 6900; FastConnect 7800; LeMans_AU_LGIT; LeMansAU; Pandeiro; QAM8255P; +34 more · source: vendor
F6
Fastconnect 6900 Firmware · Qualcomm
All versions, or not specified · source: NVD
F7
Fastconnect 7800 Firmware · Qualcomm
All versions, or not specified · source: NVD
LA
Lemans AU Lgit Firmware · Qualcomm
All versions, or not specified · source: NVD
LF
Lemansau Firmware · Qualcomm
All versions, or not specified · source: NVD
PF
Pandeiro Firmware · Qualcomm
All versions, or not specified · source: NVD
QF
Qam8255p Firmware · Qualcomm
All versions, or not specified · source: NVD
QF
Qam8397p Firmware · Qualcomm
All versions, or not specified · source: NVD
QF
Qam8797p Firmware · Qualcomm
All versions, or not specified · source: NVD
QF
Qamsrv1h Firmware · Qualcomm
All versions, or not specified · source: NVD
QF
Qamsrv1m Firmware · Qualcomm
All versions, or not specified · source: NVD
QF
Qca6595au Firmware · Qualcomm
All versions, or not specified · source: NVD
References
NVD
https://nvd.nist.gov/vuln/detail/CVE-2026-21383
CVE.org
https://www.cve.org/CVERecord?id=CVE-2026-21383
Vendor Advisory
https://docs.qualcomm.com/product/publicresources/securitybulletin/july-2026-bulletin.html
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