7.8

CVE-2025-21439: qualcomm, inc. snapdragon Out-of-bounds Write

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

Vulnerability summary

CVE-2025-21439 is a high (CVSS 7.8) Out-of-bounds Write 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 reading board data via IOCTL call when the WLAN driver copies the content to the provided output buffer.

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

Qualcomm25 products
Qualcomm, inc.1 product
  • snapdragonFastConnect 6700 | FastConnect 6900 | QCA6595AU | QCM5430 | QCM6490 | QCN7605 | QCN7606 | QCS5430 | QCS6490 | Qualcomm Video Collaboration VC3 Platform | SC8180X+SDX55 | Snapdragon 8c Compute Platform (SC8180X-AD) "Poipu Lite" | Snapdragon 8c Compute Platform (SC8180XP-AD) "Poipu Lite" | Snapdragon 8cx Compute Platform (SC8180X-AA, AB) | Snapdragon 8cx Compute Platform (SC8180XP-AC, AF) "Poipu Pro" | Snapdragon 8cx Gen 2 5G Compute Platform (SC8180X-AC, AF) "Poipu Pro" | Snapdragon 8cx Gen 2 5G Compute Platform (SC8180XP-AA, AB) | WCD9370 | WCD9375 | WCD9380 | WCD9385

2 vendors · 26 products

References

1 links