CVE-2021-1897

Device startup interruption via splash-image over-read

Published Jul 13, 2021 · Updated Aug 3, 2024

Buffer over-read in Qualcomm Snapdragon boot firmware allows physically proximate attackers to interrupt device startup via a crafted splash image. The boot image loader fails to validate boundary conditions before reading splash-image data, allowing it to read beyond the intended buffer. Physical access is required to supply the image, and the published impact is limited to availability, with no reported data disclosure or modification.

CVSS severity4.6
Medium
EPSS probability0.14%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
Coverage for this vulnerability

See if you're affected

Explore vulnerability checks for your environment with Hinoki.

Book a demo

Summary

What happened

Buffer over-read in Qualcomm Snapdragon boot firmware allows physically proximate attackers to interrupt device startup via a crafted splash image. The boot image loader fails to validate boundary conditions before reading splash-image data, allowing it to read beyond the intended buffer. Physical access is required to supply the image, and the published impact is limited to availability, with no reported data disclosure or modification.

The record

CVE
CVE-2021-1897
Published
Jul 13, 2021
Updated
Aug 3, 2024
Vendor
Qualcomm
Product
Snapdragon
Classifications
CWE-125
Attack vector
physical
Privileges
unauthenticated

Timeline

How it unfolded

  1. Jul 13, 2021CVE publishedPublication date reported by the CVE source.
  2. Aug 3, 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, APQ8053, AQT1000, MDM9206, MSM8909W, QCA6420, QCA6430, QCA9367, QCA9377, Qualcomm215, SD 675, SD205, SD210, SD675, SD678, SD720G, SD730, SD855, SDA429W, SDX50M, SDX55, SDX55M, SM6250, WCD9326, WCD9330, WCD9340, WCD9341, WCD9370, WCD9375, WCD9380, WCN3610, WCN3615, WCN3620, WCN3660B, WCN3680, WCN3680B, WCN3950, WCN3980, WCN3988, WCN3991, WCN3998, WSA8810, WSA8815

What conditions does exploitation require?

Attack vectorphysical
Required privilegesunauthenticated

What is affected?

Qualcomm · Snapdragonversion=APQ8009, APQ8009W, APQ8053, AQT1000, MDM9206, MSM8909W, QCA6420, QCA6430, QCA9367, QCA9377, Qualcomm215, SD 675, SD205, SD210, SD675, SD678, SD720G, SD730, SD855, SDA429W, SDX50M, SDX55, SDX55M, SM6250, WCD9326, WCD9330, WCD9340, WCD9341, WCD9370, WCD9375, WCD9380, WCN3610, WCN3615, WCN3620, WCN3660B, WCN3680, WCN3680B, WCN3950, WCN3980, WCN3988, WCN3991, WCN3998, WSA8810, WSA8815

Published CVSS scores

4.6Qualcomm, Inc.CVSS:3.1/AV:P/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
2.1NIST NVDAV:L/AC:L/Au:N/C:N/I:N/A:P

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)
Vectorphysical
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

See the directory against your own environment.

Your stack

Check the software in your environment

Book a demo to see how Hinoki identifies affected software and validates exploitability in your environment.

Book a demo