CVE-2020-11134Network attack vector

Memory corruption via malformed NAN attribute lengths

Published Jun 9, 2021 · Updated Aug 4, 2024

Out-of-bounds write in Qualcomm Snapdragon WLAN firmware allows remote attackers to corrupt memory via a crafted NAN management frame. The firmware parser does not validate time-bitmap length and bit-duration fields in NAN ranging-setup attributes before using them to write stack data. Exploitation is remote and unauthenticated but requires WLAN/NAN reachability; Qualcomm does not state whether corruption yields code execution, a crash, or another outcome.

CVSS severity9.8
Critical
EPSS probability0.80%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Out-of-bounds write in Qualcomm Snapdragon WLAN firmware allows remote attackers to corrupt memory via a crafted NAN management frame. The firmware parser does not validate time-bitmap length and bit-duration fields in NAN ranging-setup attributes before using them to write stack data. Exploitation is remote and unauthenticated but requires WLAN/NAN reachability; Qualcomm does not state whether corruption yields code execution, a crash, or another outcome.

The record

CVE
CVE-2020-11134
Published
Jun 9, 2021
Updated
Aug 4, 2024
Vendor
Unknown vendor
Product
Unknown product
Classifications
CWE-129
Attack vector
network
Privileges
unauthenticated

Timeline

How it unfolded

  1. Jun 9, 2021CVE publishedPublication date reported by the CVE source.
  2. Aug 4, 2024Record updatedLatest update available in the CVE record.

Exploitability

Present is not the same as exploitable

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Is a vulnerable build present?

Affected buildAffected product and version details are unavailable.

What conditions does exploitation require?

Attack vectornetwork
Required privilegesunauthenticated

What is affected?

Affected products and versions are unavailable in this record.

Published CVSS scores

9.8QualcommCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
9.8NIST NVDCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
10.0NIST NVDAV:N/AC:L/Au:N/C:C/I:C/A:C

CVSS describes severity. EPSS estimates exploitation probability.

Attacks

What attackers are doing with it

Daily unique IPs observed by Shadowserver honeypots for known exploited vulnerabilities (KEVs). Missing observations do not establish an absence of attacks.

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No observations available

Sep 10, 2026Sep 16, 2026
Latest reporting daySep 16, 2026
Latest daily unique IPsUnavailable
Prior 30-day averageUnavailable
SourceShadowserver honeypots (KEV)
Vectornetwork
Privilegesunauthenticated
Known exploitationUnconfirmed
Public exploitUnconfirmed

Weakness, pattern, technique

CWE-129Improper Validation of Array Index

Public exploit references

No public exploit references are available in this record.

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Technologies

Your stack

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Your stack

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