Skip to content
Noroxi
NVD / CVE Program· CNA qualcomm

CVE-2021-35108: Improper checking of AP-S lock bit while verifying the secure resource group permissions can lead to non secure read and write access in Sna

Noroxi assessment

Priority: Monitor (action score 27/100)

  • The sources we track (CISA KEV, Exploit-DB, Metasploit, Nuclei, GitHub) show no public exploit code or exploitation in the wild.
  • Probability of exploitation in the next 30 days: 0.19% (FIRST EPSS).
  • Physical access to the device is required. No account or password is required. No user action is required. No special conditions are required; it is repeatable.
  • According to the record, no fixed version is available yet.

Low priority for now. Update when a fix is released; follow the vendor's advisory.

Generated automatically from the record's data: CVSS (NVD and CNA), CISA KEV and SSVC, FIRST EPSS, exploit sources, fixed versions. How we calculate it

Primary sources: NVD · CVE.org · FIRST EPSS

Improper checking of AP-S lock bit while verifying the secure resource group permissions can lead to non secure read and write access in Snapdragon Connectivity, Snapdragon Mobile

MediumCVSS 6.8 · v3.1—No exploit No fix recorded
Published
Sep 2, 2022
Updated
Jun 16, 2026
EPSS
0.1% · 9th percentile

Report tools

JSON

Action score

27

Monitor

Low priority for now.

CVSS
27 / 40 · 6.8 / 10
CISA KEV
0 / 30 · Not listed
EPSS
0 / 30 · 0.1%

CNA vs NVD score

NVD
6.8
CNA · qualcomm
6.8
agree

The score given by the assigning authority versus NVD’s independent score. A gap means the severity is contested.

Get told when this record changes

  • Not in KEV: no record of exploitation in the wild
  • No public exploit code on record
  • No fixed version yet

If any of these changes, we'll tell you in the daily email digest.

Follow CVE-2021-35108

When you'll hear from us

  • when it enters CISA KEV
  • when exploit code appears or is weaponized
  • when the record is updated (including a fixed version)
  • when EPSS rises 20 points in a week

One daily email digest (06:00 UTC); connect a webhook for KEV listings and weaponized exploits instantly.

Your free account also gets you

Running WordPress? Scan your site free with WP Lens

  • Stack alerts: add the products and versions you run, get the new CVEs that affect them
  • Uptime monitoring: 1 site, instant email when it goes down
  • Add your domain: subdomains and takeover risk scanned every week (1 domain)
  • 10 scans an hour on the security tools (3 a day without an account), an API key and MCP
  • All your scans in one panel: findings, what changed in the last scan, a report per domain or per client (PDF, share link)
All free tools

Sign up with email · Have an account? Sign in

Free account, no card. Unfollow any time.

Don't want an account? Get "Exploited this week" by email every MondayDon't want an account? RSS feed for qualcomm records

Running WordPress? Scan your site free with WP Lens

Is your version affected? Check it

Noroxi analysis

What does it mean in your environment?

The assessment above is generated automatically from the record's data; it doesn't know your environment. Our team verifies on your systems whether this vulnerability is actually exploitable and which mitigation is enough.

We use this product, ask for help

Affected systems

Is your version affected?

Pick the product and type the version you run. It's compared with this record's version ranges in your browser; the version isn't sent anywhere.

VendorProduct
qualcommsd 8 gen1 5g firmware
qualcommsm8475
qualcommsm7450 firmware
qualcommsm7450
qualcommsm8475 firmware
qualcommsm8475p firmware
qualcommsm8475p
qualcommwcd9370 firmware
qualcommwcd9370
qualcommwcd9375 firmware
qualcommwcd9375
qualcommwcd9380 firmware

and 17 more

Affected versions

NVD version ranges (for catalog products). Add the product to your stack with a version and matching uses these.

  • qualcomm sd 8 gen1 5g firmwareall versions
  • qualcomm sm7450 firmwareall versions
  • qualcomm sm8475 firmwareall versions
  • qualcomm sm8475p firmwareall versions
  • qualcomm wcd9370 firmwareall versions
  • qualcomm wcd9375 firmwareall versions
  • qualcomm wcd9380 firmwareall versions
  • qualcomm wcd9385 firmwareall versions
  • qualcomm wcn6750 firmwareall versions
  • qualcomm wcn6855 firmwareall versions
  • qualcomm wcn6856 firmwareall versions
  • qualcomm wcn7851 firmwareall versions
  • qualcomm wsa8830 firmwareall versions
  • qualcomm wsa8832 firmwareall versions
  • qualcomm wsa8835 firmwareall versions

Versions reported by the vendor

Affected version ranges reported by the assigning authority (qualcomm). Independent of NVD's CPE analysis and usually ahead of it.

  • Qualcomm, Inc. Snapdragon Connectivity, Snapdragon Mobile

    • SD 8 Gen1 5G, SM7450, SM8475, SM8475P, WCD9370, WCD9375, WCD9380, WCD9385, WCN6750, WCN6855, WCN6856, WCN7851, WSA8830, WSA8832, WSA8835affected

Same product

qualcomm: all records

Other highest-scoring records for the same primary product.

  • CVE-2022-25708Memory corruption in WLAN due to buffer copy without checking size of input while parsing keys in Snapdragon Connectivity, Snapdragon Mobile
    39Monitor
  • CVE-2021-35110Possible buffer overflow to improper validation of hash segment of file while allocating memory in Snapdragon Connectivity, Snapdragon Mobil
    35Monitor
  • CVE-2022-40540Buffer copy without checking the size of input in Linux Kernel
    31Monitor

Published before and after this one in the same product

  • ← EarlierCVE-2021-35091Jun 14, 2022 · Possible out of bounds read due to improper typecasting while handling page fault for global memory in Snapdragon Connectivity, Snapdragon M
    31Monitor
  • ← EarlierCVE-2022-22090Jun 14, 2022 · Memory corruption in audio due to use after free while managing buffers from internal cache in Snapdragon Compute, Snapdragon Connectivity,
    31Monitor
  • Later →CVE-2021-35109Sep 2, 2022 · Possible address manipulation from APP-NS while APP-S is configuring an RG where it tries to merge the address ranges in Snapdragon Connecti
    27Monitor

Remediation

Which version to upgrade to

Fix versions compiled from the vendor, package registries and Microsoft. Verify the vendor's note before upgrading.

No fix version is recorded for this entry. Check the references for vendor advisories.

Exploit status

No known public exploit

No public exploit has been observed yet. That doesn't mean you're safe, only that the bar is a little higher.

Research context

For pentesters and researchers: attack profile, score disagreement, timeline, patch commits, credits, variant and chain candidates, bug bounty scope. All derived from existing data; no exploit code.

Timeline

From publication to today: proof of concept, Metasploit module, CISA KEV and fix record. Dates are as reported by the sources.

No dated events beyond publication.

No history yet (it accumulates with the daily EPSS job).

Patch and commit links

Commit, PR and diff links among the references. A starting point for patch-diffing and variant hunting; fixes, not exploits.

No commit or PR link among the references.

Credits

All researchers

Finders, reporters and analysts named in the CNA record. Click a name for that researcher’s other records.

No credits in the CNA record.

Variant candidates

Same product, same weakness class, within 18 months. If the patch missed the root cause, the sibling bug is here.

No nightly-computed relations.

Chain candidates

An authentication bypass and a privilege-requiring bug in the same product, published close together: combined they may become an unauthenticated path.

—

Bug bounty scope

No known public program.

Source: bounty-targets-data (public HackerOne, Bugcrowd, Intigriti, YesWeHack listings).

Technical details

Attack conditions

  • Physical access to the device is required.
  • No account or password is required.
  • No user action is required.
  • No special conditions are required; it is repeatable.

If successful

Confidentiality
high · data can be read
Integrity
high · data or configuration can be modified
Availability
high · the service can be disrupted
Attack vector
Physical
Attack complexity
Low
Privileges required
None
User interaction
None
Scope
Unchanged
Confidentiality impact
High
Integrity impact
High
Availability impact
High

Weakness class (CWE)

CWE-754 · Improper Check for Unusual or Exceptional Conditions

CVSS vector

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

nvd-primary

Attack context

MITRE CAPEC attack patterns and ATT&CK techniques for this weakness class (CWE). A starting point for detection rules and threat hunting.

MITRE has no CAPEC/ATT&CK mapping for this CWE.

Change log

No changes recorded on tracked fields yet. Score, KEV, exploit maturity and fix status changes appear here.

References

Vendor advisories and official records. Exploit/PoC links are deliberately left out.

All records