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Qualcomm
Wcn6856 Firmware

qualcomm wcn6856 firmware Vulnerabilities: CVEs, CISA KEV & Security Advisories

418 CVEs

4 in CISA KEV

qualcomm wcn6856 firmware Vulnerabilities

CVE security advisories and vulnerability history for wcn6856 firmware by qualcomm.

418

Total CVEs

Published

4

In CISA KEV

Exploited in the wild

7

Public exploits

With known exploit

7.8

Avg CVSS

2021–2025

Last updated September 24, 2025

Overview

qualcomm wcn6856 firmware has 418 published CVE records since 2021, of which 4 are in CISA's Known Exploited Vulnerabilities catalog and 7 have a known public exploit. The average CVSS base score across scored CVEs is 7.8.

This page aggregates every publicly disclosed vulnerability (CVE) affecting qualcomm wcn6856 firmware, with a severity breakdown, the affected and patched versions, the most common weakness types, and the full CVE list.

Severity and exploitation

How the CVSS severity of qualcomm wcn6856 firmware's CVEs breaks down, plus how many are exploited in the wild or have public exploit code.

Critical41

High283

Medium60

Low0

34 additional CVEs have no CVSS severity score.

In CISA’s Known Exploited Vulnerabilities catalog

4

4 of qualcomm wcn6856 firmware's CVEs are confirmed exploited in the wild.

Public exploits

7

7 of qualcomm wcn6856 firmware's CVEs have a known public exploit available.

Affected versions and CVEs

Browse every qualcomm wcn6856 firmware version named in a CVE, then pick one to see only the CVEs that affect it.

No specific affected versions are recorded for qualcomm wcn6856 firmware; the CVEs below apply to the product without a version pin.

418 CVEs

Sort

Buffer Over-read in Video
CVE-2025-27033CWE-126
Medium · CVSS 6.1
EPSS 0.0% (4th pct)2025-09-24
Buffer Copy Without Checking Size of Input in Computer Vision
CVE-2025-21476CWE-120
High · CVSS 7.8
EPSS 0.0% (5th pct)2025-09-24
Medium vulnerability · 2024-11-22
CVE-2021-30299
Patch
CWE-20
Medium · CVSS 6.7
EPSS 0.0% (7th pct)2024-11-22
Medium vulnerability · 2023-09-05
CVE-2023-21667CWE-126
Medium · CVSS 6.5
EPSS 0.1% (24th pct)2023-09-05
High vulnerability · 2023-09-05
CVE-2023-21664CWE-120
High · CVSS 7.8
EPSS 0.1% (19th pct)2023-09-05
Medium vulnerability · 2023-09-05
CVE-2023-21663CWE-119
Medium · CVSS 6.7
EPSS 0.0% (6th pct)2023-09-05
High vulnerability · 2023-09-05
CVE-2023-21662CWE-120
High · CVSS 7.8
EPSS 0.1% (19th pct)2023-09-05
Medium vulnerability · 2023-09-05
CVE-2023-21655
Patch
CWE-190
Medium · CVSS 6.7
EPSS 0.0% (7th pct)2023-09-05
Reachable Assertion in Modem
CVE-2023-21653CWE-617
High · CVSS 7.5
EPSS 0.1% (29th pct)2023-09-05
High vulnerability · 2023-09-05
CVE-2023-21646CWE-617
High · CVSS 7.5
EPSS 0.1% (29th pct)2023-09-05
Medium vulnerability · 2023-09-05
CVE-2022-33220CWE-126
Medium · CVSS 5.1
EPSS 0.0% (6th pct)2023-09-05
High vulnerability · 2023-08-08
CVE-2023-22666CWE-190
High · CVSS 8.4
EPSS 0.1% (20th pct)2023-08-08
High vulnerability · 2023-08-08
CVE-2023-21652
Patch
CWE-320
High · CVSS 7.7
EPSS 0.1% (18th pct)2023-08-08
Incorrect Type Conversion or Cast in Core
CVE-2023-21651
Patch
CWE-704
Critical · CVSS 9.3
EPSS 0.1% (19th pct)2023-08-08
Medium vulnerability · 2023-08-08
CVE-2023-21647CWE-20
Medium · CVSS 6.5
EPSS 0.3% (51th pct)2023-08-08
Medium vulnerability · 2023-08-08
CVE-2023-21627CWE-20
Medium · CVSS 6.7
EPSS 0.0% (12th pct)2023-08-08
High vulnerability · 2023-08-08
CVE-2023-21626CWE-320
High · CVSS 7.1
EPSS 0.1% (19th pct)2023-08-08
Critical vulnerability · 2023-08-08
CVE-2022-40510
Patch
CWE-457
Critical · CVSS 9.8
EPSS 0.2% (37th pct)2023-08-08
High vulnerability · 2023-03-07
CVE-2022-40540CWE-120
High · CVSS 8.4
EPSS 0.1% (27th pct)2023-03-07
Improper Validation of Array Index in Bluetooth HOST
CVE-2022-40537CWE-129
High · CVSS 7.3
EPSS 0.3% (54th pct)2023-03-07
Incorrect type conversion in WLAN
CVE-2022-40531CWE-704
High · CVSS 8.4
EPSS 0.1% (30th pct)2023-03-07
High vulnerability · 2023-03-07
CVE-2022-40530CWE-680
High · CVSS 8.4
EPSS 0.1% (31th pct)2023-03-07
High vulnerability · 2023-03-07
CVE-2022-40527CWE-617
High · CVSS 7.5
EPSS 0.4% (58th pct)2023-03-07
High vulnerability · 2023-03-07
CVE-2022-40515
Patch
CWE-415
High · CVSS 7.3
EPSS 0.3% (54th pct)2023-03-07
High vulnerability · 2023-03-07
CVE-2022-33309CWE-126
High · CVSS 7.5
EPSS 0.5% (65th pct)2023-03-07
High vulnerability · 2023-03-07
CVE-2022-33278CWE-120
High · CVSS 7.8
EPSS 0.1% (32th pct)2023-03-07
High vulnerability · 2023-03-07
CVE-2022-33272CWE-617
High · CVSS 7.5
EPSS 0.4% (58th pct)2023-03-07
Medium vulnerability · 2023-03-07
CVE-2022-33260CWE-121
Medium · CVSS 5.9
EPSS 0.0% (13th pct)2023-03-07
Critical vulnerability · 2023-03-07
CVE-2022-33257
Patch
CWE-367
Critical · CVSS 9.3
EPSS 0.1% (19th pct)2023-03-07
Critical vulnerability · 2023-03-07
CVE-2022-33256CWE-129
Critical · CVSS 9.8
EPSS 0.3% (55th pct)2023-03-07

Showing 30 of 418

Common weakness types

The CWE weakness categories most often found in qualcomm wcn6856 firmware CVEs. Follow any weakness for its full explanation.

CWE-617Reachable Assertion15 CVEs
CWE-120Buffer Copy without Checking Size of Input ('Classic Buffer Overflow')14 CVEs
CWE-125Out-of-bounds Read13 CVEs
CWE-126Buffer Over-read12 CVEs
CWE-787Out-of-bounds Write10 CVEs
CWE-20Improper Input Validation8 CVEs
CWE-416Use After Free7 CVEs
CWE-119Improper Restriction of Operations within the Bounds of a Memory Buffer5 CVEs

Disclosure activity by year

How many qualcomm wcn6856 firmware CVEs were published each year.

2021

149

2022

191

2023

75

2024

1

2025

2

Other qualcomm products

Browse vulnerabilities for other products by qualcomm.

wcd93801,205 CVEs wcd9380 firmware1,171 CVEs wsa88301,137 CVEs wsa88351,136 CVEs wcd93851,116 CVEs qca6574au1,105 CVEs wsa8830 firmware1,105 CVEs wsa8835 firmware1,104 CVEs

All qualcomm vulnerabilities

Frequently asked questions

Common questions about qualcomm wcn6856 firmware vulnerabilities.

How many CVEs does qualcomm wcn6856 firmware have?

qualcomm wcn6856 firmware has 418 published CVE records since 2021.

How many qualcomm wcn6856 firmware CVEs are in CISA KEV?

Yes — 4 of qualcomm wcn6856 firmware's CVEs are listed in CISA's Known Exploited Vulnerabilities catalog, confirmed exploited in the wild and carrying a CISA remediation deadline.

Are there public exploits for qualcomm wcn6856 firmware vulnerabilities?

Yes — 7 of qualcomm wcn6856 firmware's CVEs have a known public exploit.

What are the most common weakness types in qualcomm wcn6856 firmware CVEs?

qualcomm wcn6856 firmware's CVEs most often map to these CWE weakness types: CWE-617 (Reachable Assertion), CWE-120 (Buffer Copy without Checking Size of Input ('Classic Buffer Overflow')), CWE-125 (Out-of-bounds Read), CWE-126 (Buffer Over-read).

How many critical qualcomm wcn6856 firmware vulnerabilities are there?

qualcomm wcn6856 firmware has 41 critical and 283 high-severity CVEs.

What is the average severity of qualcomm wcn6856 firmware CVEs?

The average CVSS base score across qualcomm wcn6856 firmware's scored CVEs is 7.8.

References

All qualcomm vulnerabilities
The MITRE CVE Program (opens in a new tab)
Learn: What is a CVE?
CWE directory: the weakness types these CVEs map to

Vulnerability data is sourced from the CVE Program; severity, KEV, and exploit signals are aggregated by RadicalNotion.AI.

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On this page

Overview
Severity and exploitation
Affected versions and CVEs
Common weakness types
Disclosure activity
Other products
FAQ
References