CVE-2020-11277

Memory corruption via FASTRPC context use-after-free

Published Feb 22, 2021 · Updated Aug 4, 2024

A use-after-free in Qualcomm Snapdragon FASTRPC on affected chipsets allows local users to corrupt memory during asynchronous RPC sessions. After an RPC message is sent, a race can free the FASTRPC context while the asynchronous session still uses it. Local access and high-complexity race timing are required, and the defect affects camera components in Compute, Industrial IoT, and Mobile platforms.

CVSS severity7.4
High
EPSS probability0.12%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

A use-after-free in Qualcomm Snapdragon FASTRPC on affected chipsets allows local users to corrupt memory during asynchronous RPC sessions. After an RPC message is sent, a race can free the FASTRPC context while the asynchronous session still uses it. Local access and high-complexity race timing are required, and the defect affects camera components in Compute, Industrial IoT, and Mobile platforms.

The record

CVE
CVE-2020-11277
Published
Feb 22, 2021
Updated
Aug 4, 2024
Vendor
Qualcomm
Product
Snapdragon
Classifications
CWE-362, CWE-416
Attack vector
local
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=PM3003A, PM4250, PM6125, PM6150A, PM6150L, PM6350, PM7150A, PM7150L, PM7250, PM7250B, PM7350C, PM8008, PM8009, PM8150A, PM8150B, PM8150C, PM8150L, PM8250, PM8350, PM8350B, PM8350BH, PM8350BHS, PM8350C, PMI632, PMK7350, PMK8002, PMK8003, PMK8350, PMR525, PMR735A, PMR735B, PMX55, QAT3514, QAT3516, QAT3518, QAT3519, QAT3555, QAT5515, QAT5516, QAT5522, QAT5533, QAT5568, QBT2000, QCA6390, QCA6391, QCA6426, QCM4290, QCS4290, QDM2307, QDM2308, QDM2310, QDM3301, QDM3302, QDM4643, QDM4650, QDM5579, QDM5620, QDM5621, QDM5650, QDM5652, QDM5670, QDM5671, QDM5677, QDM5679, QET4101, QET5100, QET5100M, QET6100, QET6110, QFS2530, QFS2580, QFS2608, QFS2630, QLN4642, QLN4650, QLN5020, QLN5030, QLN5040, QPA2625, QPA5461, QPA5580, QPA5581, QPA6560, QPA8673, QPA8686, QPA8801, QPA8802, QPA8803, QPA8821, QPA8842, QPM4621, QPM4630, QPM4640, QPM4641, QPM4650, QPM5620, QPM5621, QPM5641, QPM5657, QPM5658, QPM5670, QPM5677, QPM5679, QPM5870, QPM5875, QPM6585, QPM6621, QPM6670, QPM8820, QPM8870, QPM8895, QSM7250, QTM525, ...[truncated*]

What conditions does exploitation require?

Attack vectorlocal
Required privilegesunauthenticated

What is affected?

Qualcomm · Snapdragonversion=PM3003A, PM4250, PM6125, PM6150A, PM6150L, PM6350, PM7150A, PM7150L, PM7250, PM7250B, PM7350C, PM8008, PM8009, PM8150A, PM8150B, PM8150C, PM8150L, PM8250, PM8350, PM8350B, PM8350BH, PM8350BHS, PM8350C, PMI632, PMK7350, PMK8002, PMK8003, PMK8350, PMR525, PMR735A, PMR735B, PMX55, QAT3514, QAT3516, QAT3518, QAT3519, QAT3555, QAT5515, QAT5516, QAT5522, QAT5533, QAT5568, QBT2000, QCA6390, QCA6391, QCA6426, QCM4290, QCS4290, QDM2307, QDM2308, QDM2310, QDM3301, QDM3302, QDM4643, QDM4650, QDM5579, QDM5620, QDM5621, QDM5650, QDM5652, QDM5670, QDM5671, QDM5677, QDM5679, QET4101, QET5100, QET5100M, QET6100, QET6110, QFS2530, QFS2580, QFS2608, QFS2630, QLN4642, QLN4650, QLN5020, QLN5030, QLN5040, QPA2625, QPA5461, QPA5580, QPA5581, QPA6560, QPA8673, QPA8686, QPA8801, QPA8802, QPA8803, QPA8821, QPA8842, QPM4621, QPM4630, QPM4640, QPM4641, QPM4650, QPM5620, QPM5621, QPM5641, QPM5657, QPM5658, QPM5670, QPM5677, QPM5679, QPM5870, QPM5875, QPM6585, QPM6621, QPM6670, QPM8820, QPM8870, QPM8895, QSM7250, QTM525, ...[truncated*]

Published CVSS scores

7.4NIST NVDCVSS:3.1/AV:L/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H
6.9NIST NVDAV:L/AC:M/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.

Daily unique IPsNo honeypot observations are available for this CVE in the selected window.

No observations available

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

Weakness, pattern, technique

CWE-362Concurrent Execution using Shared Resource with Improper Synchronization ('Race Condition')
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

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Your stack

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