CVE-2026-21371: qualcomm, inc. snapdragon Buffer Over-read
CVSS: 7.8v3.1HighAnalyzed
Published 06-04-2026Last modified 07-04-2026
Vulnerability summary
CVE-2026-21371 is a high (CVSS 7.8) Buffer Over-read vulnerability in qualcomm, inc. snapdragon. EPSS estimates a 0.10% chance of exploitation in the next 30 days, higher than 0.6% of scored vulnerabilities.
CVSS score
7.8/10
010
High · v3.1 (CVE.org)EPSS score
0.10%
0%100%
Low · 0.00 pp in 30 daysKEVNot listedIn no KEV catalog
RansomwareNone recordedNo known use recorded
Public exploits0No public exploits recorded
Timeline
- 06-04-2026PublishedVulnerability first disclosed.
- 07-04-2026Last modifiedVulnerability information updated.
Description
Memory Corruption when retrieving output buffer with insufficient size validation.
CVSS metrics
2 scores · 2 sources · 1 versionHigh 7.8Preferred score · CVE.org (CNA)
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:HSourcesAll 2 agree
- NVDNIST7.8HighCVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
EPSS trend
Probability
0.10%
Chance of exploitation in the next 30 days
Percentile
1%
Versus all other CVEs
30-day change
0.00 pp
From 0.10% on 21-09-2026
21-09-202621-10-2026
EPSS score0.10%
Known exploited
Compare KEV catalogsNot in any of the 3 tracked catalogs.
Public exploits
0 foundNo public exploits indexed.
Weaknesses
CWE · root causeAffected systems
Qualcomm52 products
- aqt1000_firmwarena
- cologne_firmwarena
- fastconnect_6200_firmwarena
- fastconnect_6700_firmwarena
- fastconnect_6800_firmwarena
Qualcomm, inc.1 product
- snapdragonAQT1000 | Cologne | FastConnect 6200 | FastConnect 6700 | FastConnect 6800 | FastConnect 6900 | FastConnect 7800 | QCA0000 | QCA6391 | QCA6420 | QCA6430 | QCM5430 | QCM6490 | Qualcomm Video Collaboration VC3 Platform | SC8380XP | SM6250 | Snapdragon 460 Mobile Platform | Snapdragon 662 Mobile Platform | Snapdragon 7c Compute Platform | Snapdragon 7c Gen 2 Compute Platform "Rennell Pro" | Snapdragon 7c+ Gen 3 Compute | Snapdragon 8c Compute Platform "Poipu Lite" | Snapdragon 8c Compute Platform (SC8180XP-AD) "Poipu Lite" | Snapdragon 8cx Compute Platform | Snapdragon 8cx Compute Platform "Poipu Pro" | Snapdragon 8cx Gen 2 5G Compute Platform | Snapdragon 8cx Gen 2 5G Compute Platform "Poipu Pro" | Snapdragon 8cx Gen 3 Compute Platform | WCD9340 | WCD9341 | WCD9370 | WCD9375 | WCD9378C | WCD9380 | WCD9385 | WCN3950 | WCN3988 | WSA8810 | WSA8815 | WSA8830 | WSA8835 | WSA8840 | WSA8845 | WSA8845H | X2000077 | X2000086 | X2000090 | X2000092 | X2000094 | XG101002 | XG101032 | XG101039
2 vendors · 53 products