HOMEVULNERABILITIESCVE-2021-1946
CRITICAL

CVE-2021-1946

CWE-476Published: September 9, 2021· Updated: Jun 17, 2026

9.8
CVSS v3.1

Official Description

Null Pointer Dereference may occur due to improper validation while processing crafted SDP body in Snapdragon Auto, Snapdragon Compute, Snapdragon Connectivity, Snapdragon Consumer IOT, Snapdragon Industrial IOT, Snapdragon Mobile

NVD Source

Technical Analysis

CVE-2021-1946 can be exploited remotely over the network without requiring physical or adjacent access, significantly expanding the attack surface for threat actors.

The vulnerability requires no privileges and no user interaction, making it a prime target for automated exploitation campaigns and worm-like propagation.

A successful exploit results in complete confidentiality breach (data exposure), full integrity compromise (data manipulation), availability disruption (denial of service), with a CVSS base score of 9.8.

CVSS v3.1 Vector Breakdown

Exploitability
Attack VectorNetwork
Attack ComplexityLow
Privileges Req.None
User InteractionNone
ScopeUnchanged
Impact
ConfidentialityHigh
IntegrityHigh
AvailabilityHigh
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

Affected Vendors & Products

Qualcomm196 product(s)
apq8017 firmwareapq8017apq8053 firmwareapq8053aqt1000 firmwareaqt1000ar8035 firmwarear8035msm8917 firmwaremsm8917msm8920 firmwaremsm8920+184
Source: NVD CPE · 196 total CPE entries

Exploit & PoC Resources

NO KNOWN EXPLOITNo public exploit confirmed at this time
Exploit-DB
Offensive Security exploit database
GitHub PoC Search
Community PoC repositories
Rapid7 / Metasploit
Metasploit module search
PacketStorm
Security advisories & exploits
NVD Detail
Official NIST entry
MITRE CVE
CVE Program entry
External links open in a new tab. Always verify in a controlled environment before use.

Official Patches & Advisories

ADVISORYhttps://www.qualcomm.com/company/product-security/bulletins/september-2021-bulletin
ADVISORYhttps://www.qualcomm.com/company/product-security/bulletins/september-2021-bulletin

All References (2)

→
https://www.qualcomm.com/company/product-security/bulletins/september-2021-bulletinVendor Advisory
→
https://www.qualcomm.com/company/product-security/bulletins/september-2021-bulletinVendor Advisory

Quick Facts

CVE IDCVE-2021-1946
CVSS Score9.8 / 10
SeverityCRITICAL
WeaknessCWE-476
CISA KEVNo
Affected1 vendor(s)
PublishedSep 9, 2021

Related CVEs (CWE-476)

CVE-2010-2495
10.0
CVE-2022-36648
10.0
CVE-2015-9114
9.8
CVE-2015-9111
9.8
CVE-2015-9113
9.8
CVE-2015-9109
9.8

Recommended Actions

  • →Apply vendor patches immediately
  • →Monitor CVE-2021-1946 in threat intel feeds
  • →Review IDS/IPS signatures for exploitation attempts
Data sourced from NVD (NIST), CISA KEV, and EPSS (FIRST). Analysis generated by CTIWATCH.COM. CVE data is provided under the NVD usage policy.
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