How severe is CVE-2025-21479?

CVE-2025-21479 has a CVSS score of 8.6/10, rated HIGH. Immediate patching is strongly recommended.

Which packages are affected by CVE-2025-21479?

Affected package information for CVE-2025-21479 is not yet fully mapped. Check the official advisory links for details.

How do I fix CVE-2025-21479?

No fixed version has been published for CVE-2025-21479 yet. Monitor the advisory for updates, apply mitigations recommended by the vendor, and use O3 Security to track when a fix becomes available in your stack.

Is CVE-2025-21479 actively exploited in the wild?

Yes. There are 2 known exploit references for CVE-2025-21479, including . All exploit code should only be run in an isolated sandbox environment for research or authorized testing — never against production systems without explicit written authorization.

What is the EPSS score for CVE-2025-21479?

CVE-2025-21479 has an EPSS (Exploit Prediction Scoring System) score of 0.1%, placing it in the 35th percentile of all CVEs. EPSS is maintained by FIRST.org and estimates the probability that a vulnerability will be exploited in the wild within the next 30 days. This score indicates relatively lower exploitation probability, though the CVSS severity should still guide your patching priority.

Is CVE-2025-21479 in the CISA Known Exploited Vulnerabilities catalog?

Yes. CVE-2025-21479 (Qualcomm Multiple Chipsets Incorrect Authorization Vulnerability) was added to CISA's Known Exploited Vulnerabilities (KEV) catalog on 2025-06-03. CISA required all US federal civilian agencies to remediate this vulnerability by 2025-06-24. The required action was: Apply mitigations per vendor instructions, follow applicable BOD 22-01 guidance for cloud services, or discontinue use of the product if mitigations are unavailable. Being listed in the KEV catalog is the strongest possible confirmation of active exploitation — treat this as a critical priority.

What type of vulnerability is CVE-2025-21479?

CVE-2025-21479 is classified as CWE-863 (CWE-863). This weakness type describe the underlying flaw category, which helps determine the potential impact and the right class of mitigation.

Which products and versions are affected by CVE-2025-21479?

CVE-2025-21479 affects qualcomm aqt1000 firmware; qualcomm fastconnect 6200 firmware; qualcomm fastconnect 6700 firmware; qualcomm fastconnect 6800 firmware, and 71 more product(s). Check the affected-products list on this page against your deployed version to confirm exposure.

When was CVE-2025-21479 published, and has it been updated?

CVE-2025-21479 was published on June 3, 2025 and was last updated on October 28, 2025. Advisory data evolves as severity scores, affected ranges, and exploit intelligence are revised — always check the latest version of the advisory before acting.

CISA KEV·Added 2025-06-03 — agencies required to remediate by 2025-06-24

CVE-2025-21479

HIGH

Memory corruption due to unauthorized command execution in GPU micronode while executing specific sequence of commands.

Published

Jun 3, 2025

Updated

Oct 28, 2025

Affected

0 pkgs

Patched

None yet

Exploits

2 known

EPSS Exploitation Probability

via FIRST.org ↗

0.1%probability of exploitation in next 30 days

Lower Risk35th percentile0.00%

EPSS (Exploit Prediction Scoring System) is a daily probability model maintained by FIRST.org. It estimates the likelihood a CVE will be exploited in production environments within the next 30 days, derived from real-world threat intelligence signals.

Description

Memory corruption due to unauthorized command execution in GPU micronode while executing specific sequence of commands.

Affected Products

75 products · 75 configurations

aqt1000 firmwarequalcomm

all

fastconnect 6200 firmwarequalcomm

all

fastconnect 6700 firmwarequalcomm

all

fastconnect 6800 firmwarequalcomm

all

fastconnect 6900 firmwarequalcomm

all

fastconnect 7800 firmwarequalcomm

all

Exploits & PoCs

Research use only. For defensive security, authorized penetration testing, and academic research only. Never execute exploit code against systems without explicit written authorization.

zhuowei/cheese

CVE-2025-21479 proof-of-concept, I think

⭐ 255🍴 57Jun 2026

sarabpal-dev/cheese-cake

A proof-of-concept for CVE-2025-21479, chained with a Dirty Pagetable te

⭐ 28🍴 8Jun 2026

Frequently Asked Questions

Memory corruption due to unauthorized command execution in GPU micronode while executing specific sequence of commands.

O3 Security · Impact-Aware SCA

Is CVE-2025-21479 in your stack?

O3 detects CVE-2025-21479 across dependencies and uses function-level reachability to confirm whether the vulnerable code path is actually reachable — not just present. No false positives.

Scan my stack How O3 SCA works