Review reviewHigh

CVE-2026-21383

Qualcomm, Inc. Snapdragon, fastconnect 6900 firmware, fastconnect 6900

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
7.1
EPSS
0.07%
0.04% percentile
CISA KEV
Not listed
Published
2026.07.07
PRIORITY ASSESSMENT

Review review

The CVSS severity warrants an early asset and exposure review.

Known exploitationNot established by KEV
Exploit probability0.07%
Technical severityCVSS 7.1

Vulnerability overview

Cryptographic Issue when using a static initialization vector for AES-GCM key wrapping, which requires a unique value for each call to ensure security.

Affected product and versions

Product
Qualcomm, Inc. Snapdragon, fastconnect 6900 firmware, fastconnect 6900
Affected versions
FastConnect 6900, FastConnect 7800, LeMans_AU_LGIT, LeMansAU, Pandeiro, QAM8255P, QAM8397P, QAM8797P, QAMSRV1H, QAMSRV1M, QCA6595AU, QCA6696, QCA6698AQ, QCA6797AQ, QCA8695AU, QDU1000, QDU1110, QDU1210, QDX1010, QDX1011
Fixed versions
No verified fixed-version field is available yet

Recommended response sequence

Confirm exposure before applying a vendor-supported change.

Full remediation guide
  1. 1
    Identify

    Confirm that Qualcomm, Inc. Snapdragon, fastconnect 6900 firmware, fastconnect 6900 and an affected version are present.

  2. 2
    Prioritize

    Combine exploitation signals with asset exposure and business criticality.

  3. 3
    Remediate

    Follow the vendor advisory or supported update path and preserve rollback options.

  4. 4
    Verify

    Recheck the version, service health, access paths, and relevant logs.

Technical data

CVSS vector
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:N
CWE
CWE-323