Back to the CVE list
CVE-2026-21370

Out-of-bounds write in Qualcomm Fastconnect 6700 Firmware

CVSS score

5.3

EPSS probability

%0.1

Risk score

0.0

Published

3 mo ago

OverviewPublic Exploits (0)NewsroomVulnerability Timeline
Official patch verified

Etkilenen ürün ve sürüm için yayımlanan güvenlik güncellemesini uygulayın.

Impact on My Inventory

Only the personal products you have added to your account are assessed; an organisation's inventory does not appear here.

Checking session…

Vulnerability description

DayBreach CVE AI Research

CVE-2026-21370 has vendor, distribution, patch and security-source records on file. We can compare them and prepare an explanation linked to the evidence.

Memory Corruption when validating input batch size and buffer plane count exceeds maximum allowed values.

IMPACT: Affected Products and Software

Affected Products

The following products are affected by CVE-2026-21370 vulnerability. Where our threat engine knows the exact affected versions, they are listed below.

IDVENDORPRODUCTACTION
1qualcommfastconnect 6700 firmware View
2qualcommfastconnect 6700 View
3qualcommfastconnect 6900 firmware View
4qualcommfastconnect 6900 View
5qualcommfastconnect 7800 firmware View
6qualcommfastconnect 7800 View
7qualcommg3x gen 2 firmware View
8qualcommg3x gen 2 View
9qualcommiq-9075 firmware View
10qualcommiq-9075 View
11qualcommlemans au lgit firmware View
12qualcommlemans au lgit View
13qualcommlemansau firmware View
14qualcommlemansau View
15qualcommnetrani firmware View
16qualcommnetrani View
17qualcommpandeiro firmware View
18qualcommpandeiro View
19qualcommqam8255p firmware View
20qualcommqam8255p View
21qualcommqamsrv1h firmware View
22qualcommqamsrv1h View
23qualcommqamsrv1m firmware View
24qualcommqamsrv1m View
25qualcommqca6595 firmware View
26qualcommqca6595 View
27qualcommqca6595au firmware View
28qualcommqca6595au View
29qualcommqca6678aq firmware View
30qualcommqca6678aq View
31qualcommqca6698aq firmware View
32qualcommqca6698aq View
33qualcommqca6698au firmware View
34qualcommqca6698au View
35qualcommqca6797aq firmware View
36qualcommqca6797aq View
37qualcommqcm4490 firmware View
38qualcommqcm4490 View
39qualcommqcm8838 firmware View
40qualcommqcm8838 View
41qualcommqcs4490 firmware View
42qualcommqcs4490 View
43qualcommqcs8550 firmware View
44qualcommqcs8550 View
45qualcommqln1083bd firmware View
46qualcommqln1083bd View
47qualcommqln1086bd firmware View
48qualcommqln1086bd View
49qualcommqpa1083bd firmware View
50qualcommqpa1083bd View
51qualcommqpa1086bd firmware View
52qualcommqpa1086bd View
53qualcommqxm1093 firmware View
54qualcommqxm1093 View
55qualcommqxm1094 firmware View
56qualcommqxm1094 View
57qualcommqxm1095 firmware View
58qualcommqxm1095 View
59qualcommqxm1096 firmware View
60qualcommqxm1096 View
61qualcommsa7255p firmware View
62qualcommsa7255p View
63qualcommsa7775p firmware View
64qualcommsa7775p View
65qualcommsa8255p firmware View
66qualcommsa8255p View
67qualcommsa8620p firmware View
68qualcommsa8620p View
69qualcommsa8770p firmware View
70qualcommsa8770p View
71qualcommsa9000p firmware View
72qualcommsa9000p View
73qualcommsar2130p firmware View
74qualcommsar2130p View
75qualcommsc8380xp firmware View
76qualcommsc8380xp View
77qualcommsd 8 gen1 5g firmware View
78qualcommsd 8 gen1 5g View
79qualcommsd865 5g firmware View
80qualcommsd865 5g View
81qualcommsdr753 firmware View
82qualcommsdr753 View
83qualcommsm7435 firmware View
84qualcommsm7435 View
85qualcommsm7525 firmware View
86qualcommsm7525 View
87qualcommsm7550 firmware View
88qualcommsm7550 View
89qualcommsm7550p firmware View
90qualcommsm7550p View
91qualcommsm8550p firmware View
92qualcommsm8550p View
93qualcommsnapdragon 4 gen 2 mobile platform firmware View
94qualcommsnapdragon 4 gen 2 mobile platform View
95qualcommsnapdragon 460 mobile platform firmware View
96qualcommsnapdragon 460 mobile platform View
97qualcommsnapdragon 6 gen 1 mobile platform firmware View
98qualcommsnapdragon 6 gen 1 mobile platform View
99qualcommsnapdragon 6 gen 3 mobile platform firmware View
100qualcommsnapdragon 6 gen 3 mobile platform View
101qualcommsnapdragon 662 mobile platform firmware View
102qualcommsnapdragon 662 mobile platform View
103qualcommsnapdragon 7 gen 1 mobile platform firmware View
104qualcommsnapdragon 7 gen 1 mobile platform View
105qualcommsnapdragon 8 elite firmware View
106qualcommsnapdragon 8 elite View
107qualcommsnapdragon 8 gen 1 mobile platform firmware View
108qualcommsnapdragon 8 gen 1 mobile platform View
109qualcommsnapdragon 8 gen 2 mobile platform firmware View
110qualcommsnapdragon 8 gen 2 mobile platform View
111qualcommsnapdragon ar1 gen 1 platform firmware View
112qualcommsnapdragon ar1 gen 1 platform View
113qualcommsnapdragon xr2 5g platform firmware View
114qualcommsnapdragon xr2 5g platform View
115qualcommsnapdragon xr2+ gen 1 platform firmware View
116qualcommsnapdragon xr2+ gen 1 platform View
117qualcommsrv1h firmware View
118qualcommsrv1h View
119qualcommsrv1m firmware View
120qualcommsrv1m View
121qualcommsxr2230p firmware View
122qualcommsxr2230p View
123qualcommsxr2330p firmware View
124qualcommsxr2330p View
125qualcommsxr2350p firmware View
126qualcommsxr2350p View
127qualcommwcd9370 firmware View
128qualcommwcd9370 View
129qualcommwcd9371 firmware View
130qualcommwcd9371 View
131qualcommwcd9375 firmware View
132qualcommwcd9375 View
133qualcommwcd9378 firmware View
134qualcommwcd9378 View
135qualcommwcd9380 firmware View
136qualcommwcd9380 View
137qualcommwcd9385 firmware View
138qualcommwcd9385 View
139qualcommwcd9390 firmware View
140qualcommwcd9390 View
141qualcommwcd9395 firmware View
142qualcommwcd9395 View
143qualcommwcn3950 firmware View
144qualcommwcn3950 View
145qualcommwcn3988 firmware View
146qualcommwcn3988 View
147qualcommwcn6450 firmware View
148qualcommwcn6450 View
149qualcommwcn6650 firmware View
150qualcommwcn6650 View
151qualcommwcn6755 firmware View
152qualcommwcn6755 View
153qualcommwcn7860 firmware View
154qualcommwcn7860 View
155qualcommwcn7861 firmware View
156qualcommwcn7861 View
157qualcommwcn7881 firmware View
158qualcommwcn7881 View
159qualcommwsa8810 firmware View
160qualcommwsa8810 View
161qualcommwsa8815 firmware View
162qualcommwsa8815 View
163qualcommwsa8830 firmware View
164qualcommwsa8830 View
165qualcommwsa8832 firmware View
166qualcommwsa8832 View
167qualcommwsa8835 firmware View
168qualcommwsa8835 View
169qualcommwsa8840 firmware View
170qualcommwsa8840 View
171qualcommwsa8845 firmware View
172qualcommwsa8845 View
173qualcommwsa8845h firmware View
174qualcommwsa8845h View
175qualcommx1e80100 firmware View
176qualcommx1e80100 View
177qualcommxrv7209 firmware View
178qualcommxrv7209 View
179qualcommxrv9209 firmware View
180qualcommxrv9209 View
Total affected vendors: 1|Products: 180

RED HAT CSAF/VEX: Product Impact Check

Red Hat has not yet published a CSAF/VEX impact record for this CVE. This does not mean “not affected”.

SCORING: CVSS from Multiple Sources

CVSS Scores

The Common Vulnerability Scoring System is a standardised framework for assessing the severity of vulnerabilities in software and systems. We collect and display CVSS scores from several sources for each CVE.

SCOREVERSIONSEVERITYVECTORSOURCE
5.3CVSS V31MEDIUMCVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:C/C:L/I:L/A:LNVD
5.3CVSS V31MEDIUMCVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:L/I:L/A:LNVD

Patch and Remediation Guide

Solution & Remediation Advisory

Patch verified

2 doğrulanmış yama veya düzeltilmiş sürüm kanıtı bulundu.

nvd

NVD tarafından Patch olarak etiketlenmiş referans

Open source
reference

Yama veya çözüm referansı

Open source
Confirm the affected product and version against the source evidence above.
Restrict access to internet-facing services and apply network segmentation.
Apply the official update named in the evidence only to the matching product and version.
Monitor server logs and network endpoints for signs of anomalous execution.

Public exploit and active exploitation status

Verified exploit intelligence

No verified public PoC, exploit repository or Metasploit module has been found for this CVE yet.

Weakness Classification and Attack Patterns (CWE & CAPEC)

CWE - Common Weakness Enumeration

While CVE identifies specific instances of vulnerabilities, CWE categorises the common flaws or weaknesses that can lead to vulnerabilities. CVE-2026-21370 is associated with the following CWEs:

CWE-787: Out-of-bounds Write

Common Attack Pattern Enumeration and Classification (CAPEC)

Common Attack Pattern Enumeration and Classification (CAPEC) stores attack patterns, which are descriptions of the common attributes and approaches employed by adversaries to exploit the CVE-2026-21370 weaknesses.

CAPEC-66: SQL InjectionCAPEC-126: Path TraversalCAPEC-28: OS Command Injection

Attack Vector and Accessibility

ExposureYerel erişim
PermissionsLow
UserGerekmiyor

Official Sources and Advisories

https://docs.qualcomm.com/product/publicresources/securitybulletin/july-2026-bulletin.htmlpatch

CVSS Vector Radar Chart

5.3 / 10
Attack VectorLocalComplexityLowPrivilegesLowUser Interact.NoneConfidentialityLowIntegrityNoneAvailabilityLow

Vulnerability Scoring Details

CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:L/I:L/A:L
Attack VectorLocal
Attack ComplexityLow
Privileges RequiredLow privileges
User InteractionNone required
Confidentiality (Gizlilik)Low
Integrity (Bütünlük)None
Availability (Erişilebilirlik)Low

Yama doğrulandı

2 doğrulanmış yama veya düzeltilmiş sürüm kanıtı bulundu.

Follow the vendor

Q
qualcomm logo
qualcomm

Weakness Type (CWE & CAPEC)

CWE-787

Similar Vulnerabilities

6.5
CVE-2020-3702Vulnerability in Qualcomm, Inc. Snapdragon Auto, Snapdragon Compute, Snapdragon Connectivity, Snapdragon Consumer IOT, Snapdragon Industrial IOT, Snapdragon Mobile, Snapdragon Voice & Music, Snapdragon Wearables, Snapdragon Wired Infrastructure And Networking
QI
Qualcomm, Inc. logo
VendorQualcomm, Inc.ProductSnapdragon Auto, Snapdragon Compute, Snapdragon Connectivity, Snapdragon Consumer IOT, Snapdragon Industrial IOT, Snapdragon Mobile, Snapdragon Voice & Music, Snapdragon Wearables, Snapdragon Wired Infrastructure and Networking+27 etkilenen
Patch status unknownEPSS %06 y ago

Get this vulnerability through the API

Affected products, version ranges, exploitation status and patch information in a single request, with a free key.

Get a free keyDocumentation
curl -H "x-api-key: $DAYBREACH_API_KEY" \
  "https://api.daybreach.dev/api/v1/intel/cves/CVE-2026-21370"