Skip to content
Noroxi
NVD / CVE Program· CNA qualcomm

CVE-2021-1887: An assertion can be reached in the WLAN subsystem while using the Wi-Fi Fine Timing Measurement protocol in Snapdragon Wired Infrastructure

Noroxi assessment

Priority: Monitor (action score 30/100)

  • 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: 0.58% (FIRST EPSS).
  • Anyone who can reach it over the internet can trigger it. 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

An assertion can be reached in the WLAN subsystem while using the Wi-Fi Fine Timing Measurement protocol in Snapdragon Wired Infrastructure and Networking

HighCVSS 7.5 · v3.1—No exploit No fix recorded
Published
Jul 13, 2021
Updated
Jun 16, 2026
EPSS
0.5% · 47th percentile

Report tools

JSON

Action score

30

Monitor

Low priority for now.

CVSS
30 / 40 · 7.5 / 10
CISA KEV
0 / 30 · Not listed
EPSS
0 / 30 · 0.5%

CNA vs NVD score

NVD
7.5
CNA · qualcomm
7.5
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-2021-1887

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
qualcommar7420 firmware
qualcommar7420
qualcommar9380 firmware
qualcommar9380
qualcommcsr8811 firmware
qualcommcsr8811
qualcommipq4018 firmware
qualcommipq4018
qualcommipq4019 firmware
qualcommipq4019
qualcommipq4028 firmware
qualcommipq4028

and 66 more

Affected versions

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

  • qualcomm ar7420 firmwareall versions
  • qualcomm ar9380 firmwareall versions
  • qualcomm csr8811 firmwareall versions
  • qualcomm ipq4018 firmwareall versions
  • qualcomm ipq4019 firmwareall versions
  • qualcomm ipq4028 firmwareall versions
  • qualcomm ipq4029 firmwareall versions
  • qualcomm ipq8064 firmwareall versions
  • qualcomm ipq8065 firmwareall versions
  • qualcomm ipq8069 firmwareall versions
  • qualcomm ipq8074 firmwareall versions
  • qualcomm qca6310 firmwareall versions
  • qualcomm qca6320 firmwareall versions
  • qualcomm qca6335 firmwareall versions
  • qualcomm qca6428 firmwareall versions
  • qualcomm qca6438 firmwareall versions
  • qualcomm qca7500 firmwareall versions
  • qualcomm qca7520 firmwareall versions
  • qualcomm qca7550 firmwareall versions
  • qualcomm qca9531 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 Wired Infrastructure and Networking

    • AR7420, AR9380, CSR8811, IPQ4018, IPQ4019, IPQ4028, IPQ4029, IPQ8064, IPQ8065, IPQ8069, IPQ8074, QCA6310, QCA6320, QCA6335, QCA6428, QCA6438, QCA7500, QCA7520, QCA7550, QCA9531, QCA9558, QCA9561, QCA9affected

Same product

qualcomm: all records

Other highest-scoring records for the same primary product.

  • CVE-2020-11259Memory corruption due to lack of validation of pointer arguments passed to Trustzone BSP in Snapdragon Wired Infrastructure and Networking
    35Monitor
  • CVE-2020-11258Memory corruption due to lack of validation of pointer arguments passed to Trustzone BSP in Snapdragon Wired Infrastructure and Networking
    35Monitor
  • CVE-2020-11257Memory corruption due to lack of validation of pointer arguments passed to TrustZone BSP in Snapdragon Wired Infrastructure and Networking
    35Monitor

Published before and after this one in the same product

  • ← EarlierCVE-2020-11256Jun 9, 2021 · Memory corruption due to lack of check of validation of pointer to buffer passed to trustzone in Snapdragon Wired Infrastructure and Network
    35Monitor
  • ← EarlierCVE-2020-11265Jun 9, 2021 · Information disclosure issue due to lack of validation of pointer arguments passed to TZ BSP in Snapdragon Wired Infrastructure and Networki
    22Monitor
  • ← EarlierCVE-2020-11266Jun 9, 2021 · Image address is dereferenced before validating its range which can cause potential QSEE information leakage in Snapdragon Wired Infrastruct
    26Monitor

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.

EPSS, last 120 days

FIRST EPSS daily score; only changes of 0.01 or more are recorded (step chart).

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

  • Anyone who can reach it over the internet can trigger it.
  • No account or password is required.
  • No user action is required.
  • No special conditions are required; it is repeatable.

If successful

Confidentiality
none
Integrity
none
Availability
high · the service can be disrupted
Attack vector
Network
Attack complexity
Low
Privileges required
None
User interaction
None
Scope
Unchanged
Confidentiality impact
None
Integrity impact
None
Availability impact
High

Weakness class (CWE)

CWE-617 · Reachable Assertion

CVSS vector

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