CVE-2020-11272Network attack vector

Memory corruption via stale WLAN hash entry

Published Feb 22, 2021 · Updated Aug 4, 2024

Use-after-free in Qualcomm Snapdragon WLAN firmware allows remote attackers to corrupt memory by triggering processing of a crafted frame. A hash-table entry can be deleted before a frame is enqueued to the packet-engine queue, but later processing dereferences the stale entry. Network access to the WLAN component is the only published gate; Qualcomm has not detailed the resulting device behavior beyond memory corruption.

CVSS severity9.8
Critical
EPSS probability0.89%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Use-after-free in Qualcomm Snapdragon WLAN firmware allows remote attackers to corrupt memory by triggering processing of a crafted frame. A hash-table entry can be deleted before a frame is enqueued to the packet-engine queue, but later processing dereferences the stale entry. Network access to the WLAN component is the only published gate; Qualcomm has not detailed the resulting device behavior beyond memory corruption.

The record

CVE
CVE-2020-11272
Published
Feb 22, 2021
Updated
Aug 4, 2024
Vendor
Qualcomm
Product
Snapdragon
Classifications
CWE-416
Attack vector
network
Privileges
unauthenticated

Timeline

How it unfolded

  1. Feb 22, 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

Compare your product and version with the public record. A matching version still requires validation against your environment.

Is a vulnerable build present?

Compare these published version ranges with your installed build and any vendor patches.

  1. Affected versionversion=APQ8009, APQ8009W, APQ8017, APQ8053, APQ8076, APQ8096AU, AQT1000, AR8031, AR8035, CSRA6620, CSRA6640, CSRB31024, MDM9206, MDM9250, MDM9650, MDM9655, MSM8909W, MSM8917, MSM8937, MSM8953, PM215, PM3003A, PM439, PM6125, PM6150, PM6150A, PM6150L, PM6350, PM640A, PM640L, PM640P, PM660, PM7150A, PM7150L, PM7250, PM7250B, PM7350C, PM8004, PM8008, PM8009, PM8150, PM8150A, PM8150B, PM8150C, PM8150L, PM8250, PM8350, PM8350B, PM8350BH, PM8350BHS, PM8350C, PM855, PM855B, PM855L, PM855P, PM8909, PM8916, PM8937, PM8952, PM8953, PM8956, PM8996, PMC1000H, PMD9607, PMD9655, PMI632, PMI8937, PMI8952, PMI8994, PMI8996, PMK7350, PMK8001, PMK8002, PMK8003, PMK8350, PMM6155AU, PMM8155AU, PMM8195AU, PMM855AU, PMM8996AU, PMR525, PMR735A, PMR735B, PMW3100, PMX20, PMX24, PMX55, QAT3514, QAT3516, QAT3518, QAT3519, QAT3522, QAT3550, QAT3555, QAT5515, QAT5516, QAT5522, QAT5533, QAT5568, QBT1500, QBT2000, QCA4020, QCA6174A, QCA6175A, QCA6390, QCA6391, QCA6420, QCA6421, QCA6426, QCA6430, QCA6431, QCA6436, QCA6564, QCA6564A, ...[truncated*]

What conditions does exploitation require?

Attack vectornetwork
Required privilegesunauthenticated

What is affected?

Qualcomm · Snapdragonversion=APQ8009, APQ8009W, APQ8017, APQ8053, APQ8076, APQ8096AU, AQT1000, AR8031, AR8035, CSRA6620, CSRA6640, CSRB31024, MDM9206, MDM9250, MDM9650, MDM9655, MSM8909W, MSM8917, MSM8937, MSM8953, PM215, PM3003A, PM439, PM6125, PM6150, PM6150A, PM6150L, PM6350, PM640A, PM640L, PM640P, PM660, PM7150A, PM7150L, PM7250, PM7250B, PM7350C, PM8004, PM8008, PM8009, PM8150, PM8150A, PM8150B, PM8150C, PM8150L, PM8250, PM8350, PM8350B, PM8350BH, PM8350BHS, PM8350C, PM855, PM855B, PM855L, PM855P, PM8909, PM8916, PM8937, PM8952, PM8953, PM8956, PM8996, PMC1000H, PMD9607, PMD9655, PMI632, PMI8937, PMI8952, PMI8994, PMI8996, PMK7350, PMK8001, PMK8002, PMK8003, PMK8350, PMM6155AU, PMM8155AU, PMM8195AU, PMM855AU, PMM8996AU, PMR525, PMR735A, PMR735B, PMW3100, PMX20, PMX24, PMX55, QAT3514, QAT3516, QAT3518, QAT3519, QAT3522, QAT3550, QAT3555, QAT5515, QAT5516, QAT5522, QAT5533, QAT5568, QBT1500, QBT2000, QCA4020, QCA6174A, QCA6175A, QCA6390, QCA6391, QCA6420, QCA6421, QCA6426, QCA6430, QCA6431, QCA6436, QCA6564, QCA6564A, ...[truncated*]

Published CVSS scores

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-416Use After Free

Public exploit references

No public exploit references are available in this record.

Labels summarize the accepted research assessment. They do not indicate a test against your environment.

Technologies

Your stack

See the directory against your own environment.

Your stack

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