7.8

CVE-2025-21447: qualcomm, inc. snapdragon Improper Validation of Array Index

CVSS: 7.8v3.1HighAnalyzed
Published 07-04-2025Last modified 26-02-2026
Open JSON

Vulnerability summary

CVE-2025-21447 is a high (CVSS 7.8) Improper Validation of Array Index vulnerability in qualcomm, inc. snapdragon. EPSS estimates a 0.11% chance of exploitation in the next 30 days, higher than 1.1% of scored vulnerabilities.

Overall risk
31/100
0100
Medium · default modelHow is this calculated?
CVSS score
7.8/10
010
High · v3.1 (CVE.org)
EPSS score
0.11%
0%100%
Low · 0.00 pp in 30 days
KEVNot listedIn no KEV catalog
RansomwareNone recordedNo known use recorded
Public exploits0No public exploits recorded

Timeline

  1. 07-04-2025
    PublishedVulnerability first disclosed.
  2. 26-02-2026
    Last modifiedVulnerability information updated.

Description

Memory corruption may occur while processing device IO control call for session control.

CVSS metrics

2 scores · 2 sources · 1 version

EPSS trend

Probability

0.11%

Chance of exploitation in the next 30 days

Percentile

1%

Versus all other CVEs

30-day change

0.00 pp

From 0.11% on 20-09-2026

20-09-202620-10-2026
EPSS score
0.11%

Known exploited

Compare KEV catalogs

Not in any of the 3 tracked catalogs.

Public exploits

0 found

No public exploits indexed.

Weaknesses

CWE · root cause

Affected systems

Qualcomm8 products
Qualcomm, inc.1 product
  • snapdragonFastConnect 6900 | FastConnect 7800 | SC8380XP | WCD9380 | WCD9385 | WSA8840 | WSA8845 | WSA8845H

2 vendors · 9 products

References

1 links