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CVE-2021-30347

25
FAUCET Score

CVE-2021-30347 describes an improper integrity check vulnerability in Qualcomm Snapdragon products (Auto, Compute, Connectivity, Industrial IOT, Mobile) that can lead to a race condition between PDCP and RRC tasks. With a CVSS score of 8.1 (High), this vulnerability is remotely exploitable with high impact on confidentiality, integrity, and availability, but requires high attack complexity. Despite its severity, there is currently no public exploit code available, nor is it listed on CISA's KEV catalog, indicating no active exploitation. Community discussion and media coverage are also minimal, suggesting low public awareness.

Impacted Technologies

VendorProductVersion(s)CPE
Range not provided by sourceCPE matchmatch criteria
cpe:2.3:o:qualcomm:ar8035_firmware:-:*:*:*:*:*:*:*
Range not provided by sourceCPE matchmatch criteria
cpe:2.3:o:qualcomm:qca6390_firmware:-:*:*:*:*:*:*:*
Range not provided by sourceCPE matchmatch criteria
cpe:2.3:o:qualcomm:qca6391_firmware:-:*:*:*:*:*:*:*
Range not provided by sourceCPE matchmatch criteria
cpe:2.3:o:qualcomm:qca6426_firmware:-:*:*:*:*:*:*:*
Range not provided by sourceCPE matchmatch criteria
cpe:2.3:o:qualcomm:qca6436_firmware:-:*:*:*:*:*:*:*

CVSS Data

CVSS version used by this source: 3.1

9.1CRITICAL

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

Attack Vector
NETWORK
Attack Complexity
LOW
Privileges Required
NONE
User Interaction
NONE
Scope
UNCHANGED
Confidentiality Impact
HIGH
Integrity Impact
HIGH
Availability Impact
NONE
Exploitability Score
3.9
Impact Score
5.2
CvssVersion
3.1

Exploit Intelligence

EPSS Score
0.46%
Probability of exploitation in next 30 days
EPSS Percentile
37.8%
Percentile rank of EPSS score among Peer Group
As of 2026-07-28
Model: v2026.06.15
This CVE's current EPSS score of 0.0046 is in the 12th percentile among its peer group of 8,920 CVEs.

Social Chatter

The average CVE in this peer group has 0.0 Twitter, 0.1 Reddit, 0.1 Bluesky, 0.1 Mastodon, and 0.2 GitHub mentions.

Media Mentions

No media coverage found for this CVE.

The average CVE in this peer group has 0.1 InfoSec Media, 0.0 Vendor Blog, and 0.0 Security Researcher mentions.

Remediation

Remediation records are not available for this CVE.

References

qualcomm.com / company/product-security/bulletins/april-2022-bulletin
Vendor Advisory