CVE-2020-11283Network attack vector

Memory corruption via unvalidated MKV clip parsing

Published Feb 22, 2021 · Updated Aug 4, 2024

Stack-based buffer overflow in Qualcomm Snapdragon video processing allows remote attackers to corrupt memory with a crafted MKV clip. The affected video component fails to validate MKV clip data before a stack-buffer write, allowing parser input to exceed the destination boundary. Playback of attacker-supplied MKV content must reach that component; public records do not name the parser or function or establish reliable code execution.

CVSS severity9.8
Critical
EPSS probability0.71%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Stack-based buffer overflow in Qualcomm Snapdragon video processing allows remote attackers to corrupt memory with a crafted MKV clip. The affected video component fails to validate MKV clip data before a stack-buffer write, allowing parser input to exceed the destination boundary. Playback of attacker-supplied MKV content must reach that component; public records do not name the parser or function or establish reliable code execution.

The record

CVE
CVE-2020-11283
Published
Feb 22, 2021
Updated
Aug 4, 2024
Vendor
Qualcomm
Product
Snapdragon
Classifications
CWE-787, T1203
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, APQ8064AU, APQ8096AU, AQT1000, AR8031, AR8151, CSRA6620, CSRA6640, FSM10055, FSM10056, MDM9206, MDM9650, MSM8909W, MSM8917, MSM8937, MSM8953, MSM8996AU, PM215, PM3003A, PM4125, PM439, PM456, PM6125, PM6150, PM6150A, PM6150L, PM6250, PM6350, PM640A, PM640L, PM640P, PM660, PM660A, PM660L, PM670, PM670A, PM670L, PM7150A, PM7150L, PM7250, PM7250B, PM7350C, PM8004, PM8005, PM8008, PM8009, PM8150A, PM8150B, PM8150C, PM8150L, PM8250, PM8350, PM8350B, PM8350BH, PM8350BHS, PM8350C, PM855, PM855B, PM855L, PM855P, PM8909, PM8916, PM8937, PM8953, PM8996, PM8998, PMD9607, PMD9655, PME605, PMI632, PMI8937, PMI8952, PMI8994, PMI8996, PMI8998, PMK7350, PMK8001, PMK8002, PMK8003, PMK8350, PMM6155AU, PMM8155AU, PMM8195AU, PMM855AU, PMM8996AU, PMR525, PMR735A, PMR735B, PMW3100, PMX20, PMX50, PMX55, QAT3514, QAT3516, QAT3518, QAT3519, QAT3522, QAT3550, QAT3555, QAT5515, QAT5516, QAT5522, QAT5533, QAT5568, QBT1000, QBT1500, QBT2000, QCA4020, QCA6174A, QCA6310, QCA6320, QCA6335, ...[truncated*]

What conditions does exploitation require?

Attack vectornetwork
Required privilegesunauthenticated

What is affected?

Qualcomm · Snapdragonversion=APQ8009, APQ8009W, APQ8017, APQ8053, APQ8064AU, APQ8096AU, AQT1000, AR8031, AR8151, CSRA6620, CSRA6640, FSM10055, FSM10056, MDM9206, MDM9650, MSM8909W, MSM8917, MSM8937, MSM8953, MSM8996AU, PM215, PM3003A, PM4125, PM439, PM456, PM6125, PM6150, PM6150A, PM6150L, PM6250, PM6350, PM640A, PM640L, PM640P, PM660, PM660A, PM660L, PM670, PM670A, PM670L, PM7150A, PM7150L, PM7250, PM7250B, PM7350C, PM8004, PM8005, PM8008, PM8009, PM8150A, PM8150B, PM8150C, PM8150L, PM8250, PM8350, PM8350B, PM8350BH, PM8350BHS, PM8350C, PM855, PM855B, PM855L, PM855P, PM8909, PM8916, PM8937, PM8953, PM8996, PM8998, PMD9607, PMD9655, PME605, PMI632, PMI8937, PMI8952, PMI8994, PMI8996, PMI8998, PMK7350, PMK8001, PMK8002, PMK8003, PMK8350, PMM6155AU, PMM8155AU, PMM8195AU, PMM855AU, PMM8996AU, PMR525, PMR735A, PMR735B, PMW3100, PMX20, PMX50, PMX55, QAT3514, QAT3516, QAT3518, QAT3519, QAT3522, QAT3550, QAT3555, QAT5515, QAT5516, QAT5522, QAT5533, QAT5568, QBT1000, QBT1500, QBT2000, QCA4020, QCA6174A, QCA6310, QCA6320, QCA6335, ...[truncated*]

Published CVSS scores

7.5NIST NVDAV:N/AC:L/Au:N/C:P/I:P/A:P
9.8NIST NVDCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

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)
Vectornetwork
Privilegesunauthenticated
Known exploitationUnconfirmed
Public exploitUnconfirmed

Weakness, pattern, technique

CWE-787Out-of-bounds Write
T1203Exploitation for Client Execution

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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