CVE-2021-35100Network attack vector

Service interruption via miscalculated ID3 string length

Published Jun 14, 2022 · Updated Aug 4, 2024

Out-of-bounds read in Snapdragon video parsing allows remote attackers to interrupt affected devices through a crafted ID3 tag. The closed-source video parser miscalculates the tag string length and reads beyond the intended buffer while parsing ID3 metadata. No privileges or user interaction are required; the published impact is limited to availability loss, and no more specific code locus is public.

CVSS severity7.5
High
EPSS probability0.60%
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 read in Snapdragon video parsing allows remote attackers to interrupt affected devices through a crafted ID3 tag. The closed-source video parser miscalculates the tag string length and reads beyond the intended buffer while parsing ID3 metadata. No privileges or user interaction are required; the published impact is limited to availability loss, and no more specific code locus is public.

The record

CVE
CVE-2021-35100
Published
Jun 14, 2022
Updated
Aug 4, 2024
Vendor
Qualcomm
Product
Snapdragon
Classifications
CWE-125
Attack vector
network
Privileges
unauthenticated

Timeline

How it unfolded

  1. Jun 14, 2022CVE 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=APQ8009W, APQ8017, APQ8064AU, APQ8096AU, AQT1000, AR8031, CSRA6620, CSRA6640, FSM10055, FSM10056, MDM9206, MDM9250, MDM9607, MDM9628, MSM8909W, MSM8996AU, QCA6174A, QCA6390, QCA6391, QCA6426, QCA6436, QCA6564A, QCA6564AU, QCA6574, QCA6574A, QCA6574AU, QCA6584AU, QCA6595AU, QCA6696, QCA9367, QCA9377, QCM2290, QCM4290, QCM6125, QCM6490, QCS2290, QCS405, QCS410, QCS4290, QCS603, QCS605, QCS610, QCS6125, QCS6490, Qualcomm215, SA6145P, SA6150P, SA6155, SA6155P, SA8145P, SA8150P, SA8155, SA8155P, SA8195P, SD 675, SD 8 Gen1 5G, SD205, SD210, SD429, SD460, SD480, SD662, SD675, SD678, SD690 5G, SD720G, SD730, SD750G, SD765, SD765G, SD768G, SD778G, SD780G, SD855, SD865 5G, SD870, SD888, SD888 5G, SDA429W, SDM429W, SDW2500, SDX20, SDX55M, SDXR2 5G, SM6250, SM6375, SM7250P, SM7315, SM7325P, WCD9326, WCD9330, WCD9335, WCD9340, WCD9341, WCD9370, WCD9375, WCD9380, WCD9385, WCN3610, WCN3620, WCN3660B, WCN3680B, WCN3910, WCN3950, WCN3980, WCN3988, WCN3990, WCN3991, WCN3998, WCN3999, WCN6740, WCN6750, WCN6850, ...[truncated*]

What conditions does exploitation require?

Attack vectornetwork
Required privilegesunauthenticated

What is affected?

Qualcomm · Snapdragonversion=APQ8009W, APQ8017, APQ8064AU, APQ8096AU, AQT1000, AR8031, CSRA6620, CSRA6640, FSM10055, FSM10056, MDM9206, MDM9250, MDM9607, MDM9628, MSM8909W, MSM8996AU, QCA6174A, QCA6390, QCA6391, QCA6426, QCA6436, QCA6564A, QCA6564AU, QCA6574, QCA6574A, QCA6574AU, QCA6584AU, QCA6595AU, QCA6696, QCA9367, QCA9377, QCM2290, QCM4290, QCM6125, QCM6490, QCS2290, QCS405, QCS410, QCS4290, QCS603, QCS605, QCS610, QCS6125, QCS6490, Qualcomm215, SA6145P, SA6150P, SA6155, SA6155P, SA8145P, SA8150P, SA8155, SA8155P, SA8195P, SD 675, SD 8 Gen1 5G, SD205, SD210, SD429, SD460, SD480, SD662, SD675, SD678, SD690 5G, SD720G, SD730, SD750G, SD765, SD765G, SD768G, SD778G, SD780G, SD855, SD865 5G, SD870, SD888, SD888 5G, SDA429W, SDM429W, SDW2500, SDX20, SDX55M, SDXR2 5G, SM6250, SM6375, SM7250P, SM7315, SM7325P, WCD9326, WCD9330, WCD9335, WCD9340, WCD9341, WCD9370, WCD9375, WCD9380, WCD9385, WCN3610, WCN3620, WCN3660B, WCN3680B, WCN3910, WCN3950, WCN3980, WCN3988, WCN3990, WCN3991, WCN3998, WCN3999, WCN6740, WCN6750, WCN6850, ...[truncated*]

Published CVSS scores

7.5Qualcomm, Inc.CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
7.8NIST National Vulnerability DatabaseAV:N/AC:L/Au:N/C:N/I:N/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-125Out-of-bounds Read

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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