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CVE-2022-40535· NVD / CVE Program· CNA qualcomm

Buffer Over-read in WLAN

Transient DOS due to buffer over-read in WLAN while sending a packet to device.

HighCVSS 7.5 · v3.1—No exploit No fix recorded
Published
Mar 10, 2023
Updated
Jun 17, 2026
EPSS
0.4% · 32th percentile
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Action score

30

Monitor

Low priority for now.

CVSS
30 / 40 · 7.5 / 10
CISA KEV
0 / 30 · Not listed
EPSS
0 / 30 · 0.4%

CISA SSVC decision

Exploitation
none
Automatable
yes
Technical impact
partial

Vulnrichment: CISA's decision-tree inputs.

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.

Affected systems

VendorProduct
qualcommcsr8811 firmware
qualcommcsr8811
qualcommipq8070a firmware
qualcommipq8070a
qualcommipq8071a firmware
qualcommipq8071a
qualcommipq8072a firmware
qualcommipq8072a
qualcommipq8074a firmware
qualcommipq8074a
qualcommipq8076 firmware
qualcommipq8076

and 130 more

Affected versions

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

  • qualcomm csr8811 firmwareall versions
  • qualcomm ipq8070a firmwareall versions
  • qualcomm ipq8071a firmwareall versions
  • qualcomm ipq8072a firmwareall versions
  • qualcomm ipq8074a firmwareall versions
  • qualcomm ipq8076 firmwareall versions
  • qualcomm ipq8076a firmwareall versions
  • qualcomm ipq8078 firmwareall versions
  • qualcomm ipq8078a firmwareall versions
  • qualcomm ipq8173 firmwareall versions
  • qualcomm ipq8174 firmwareall versions
  • qualcomm ipq9008 firmwareall versions
  • qualcomm ipq9574 firmwareall versions
  • qualcomm qca4024 firmwareall versions
  • qualcomm qca6390 firmwareall versions
  • qualcomm qca6391 firmwareall versions
  • qualcomm qca6421 firmwareall versions
  • qualcomm qca6426 firmwareall versions
  • qualcomm qca6431 firmwareall versions
  • qualcomm qca6436 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

    • CSR8811, IPQ8070A, IPQ8071A, IPQ8072A, IPQ8074A, IPQ8076, IPQ8076A, IPQ8078, IPQ8078A, IPQ8173, IPQ8174, IPQ9008 … (+28)affected

Same product

qualcomm: all records

Other highest-scoring records for the same primary product.

  • CVE-2024-21482Improper Restriction of Operations within the Bounds of a Memory Buffer in Linux Boot Loader
    31Monitor
  • CVE-2023-33053Improper Validation of Array Index in Kernel
    31Monitor
  • CVE-2022-40522Double free in Linux Networking
    31Monitor
  • CVE-2022-25652Cryptographic issues in BSP due to improper hash verification in Snapdragon Wired Infrastructure and Networking
    31Monitor
  • CVE-2024-33025Buffer Over-read in WLAN Host
    30Monitor
  • CVE-2023-33016Buffer Over-read in WLAN Firmware
    30Monitor

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-126 · Buffer Over-read

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.

Noroxi analysis

No Noroxi analysis for this record yet

We don't hand-write analysis for all 385,000+ vulnerabilities; that wouldn't be honest. For notable, high-impact vulnerabilities our team writes the mechanism, detection and remediation steps.

We use this product, ask for help

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