CVE-2021-1947

Use-after-free vulnerability in kernel graphics driver because of storing an invalid pointer in Snapdragon Compute, Snapdragon Connectivity, Snapdragon Industrial IOT, Snapdragon Mobile, Snapdragon Wearables, Snapdragon Wired Infrastructure and Networking

Published: 2021-09-17 Last update: 2024-11-21 Assigner: [email protected] Source: [email protected]
NVD Status：Modified，CVE State: published
View at NVD, CVE.org, EUVD

CVE-2021-1947 is rated Low Risk (35.4/100): CVSS High severity, with low exploitation likelihood (EPSS 0.15%). Monitor for updates and reassess as exploit intelligence or EPSS changes.

Risk is dynamic; we continuously reassess and refresh what is shown on this page as upstream context changes.

Exploit prediction scoring system (EPSS) score for CVE-2021-1947

EPSS lead: Daily EPSS estimates relative likelihood of exploitation; percentile ranks this CVE among scored vulnerabilities (higher = more severe relative rank).

# Date Old EPSS score New EPSS score Delta (New - Old)
1 2026-06-15 0.04% 0.15% +0.12%
2 2025-12-19 0.10% 0.04% -0.06%
3 2025-11-21 — 0.10% —

Full EPSS history (14 records total)

Common vulnerability scoring system (CVSS) metrics for CVE-2021-1947

CVSS metrics for this CVE.

Base score Version Severity Vector Exploitability Impact Score source
8.4 3.1 HIGH
CVSS:3.1/AV:L/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H Click to expand
Attack vector (AV:L)
They already need access on the box, or another person has to do something wrong; it’s not a remote drive-by.
Attack complexity (AC:L)
Once they can reach the bug, pulling it off is straightforward—no weird race conditions or rare setup.
Privileges required (PR:N)
No account or special rights needed—anonymous or random user is enough.
User interaction (UI:N)
Nobody has to click “OK” or open a trap file; it can work without a victim helping.
Scope (S:U)
Damage stays in the same “trust bubble” as the broken component—no big spill into unrelated systems.
Confidentiality (C:H)
Serious risk that confidential data gets exposed in a big way.
Integrity (I:H)
They could widely tamper with or forge data—trust in the data is badly hurt.
Availability (A:H)
Could take the service down hard or make it unusable for people who depend on it.
 2.5 5.9 [email protected]
7.8 3.1 HIGH
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H Click to expand
Attack vector (AV:L)
They already need access on the box, or another person has to do something wrong; it’s not a remote drive-by.
Attack complexity (AC:L)
Once they can reach the bug, pulling it off is straightforward—no weird race conditions or rare setup.
Privileges required (PR:L)
A normal user session is enough; they don’t have to be admin.
User interaction (UI:N)
Nobody has to click “OK” or open a trap file; it can work without a victim helping.
Scope (S:U)
Damage stays in the same “trust bubble” as the broken component—no big spill into unrelated systems.
Confidentiality (C:H)
Serious risk that confidential data gets exposed in a big way.
Integrity (I:H)
They could widely tamper with or forge data—trust in the data is badly hurt.
Availability (A:H)
Could take the service down hard or make it unusable for people who depend on it.
 1.8 5.9 [email protected]
7.2 2.0 HIGH
AV:L/AC:L/Au:N/C:C/I:C/A:C Click to expand
Access vector (AV:L)
Requires local access to the target system.
Access complexity (AC:L)
Exploitation conditions are straightforward and predictable.
Authentication (AU:N)
No authentication is required.
Confidentiality impact (C:C)
Complete confidentiality impact.
Integrity impact (I:C)
Complete integrity impact.
Availability impact (A:C)
Complete availability impact.
 3.9 10.0 [email protected]

Weakness enumeration for CVE-2021-1947

Affected software / configurations for CVE-2021-1947

Vendor Product Version Raw CPE
qualcomm apq8009w_firmware — cpe:2.3:o:qualcomm:apq8009w_firmware:-:*:*:*:*:*:*:*
qualcomm apq8053_firmware — cpe:2.3:o:qualcomm:apq8053_firmware:-:*:*:*:*:*:*:*
qualcomm ar9380_firmware — cpe:2.3:o:qualcomm:ar9380_firmware:-:*:*:*:*:*:*:*
qualcomm ipq8064_firmware — cpe:2.3:o:qualcomm:ipq8064_firmware:-:*:*:*:*:*:*:*
qualcomm ipq8065_firmware — cpe:2.3:o:qualcomm:ipq8065_firmware:-:*:*:*:*:*:*:*
qualcomm ipq8068_firmware — cpe:2.3:o:qualcomm:ipq8068_firmware:-:*:*:*:*:*:*:*
qualcomm ipq8069_firmware — cpe:2.3:o:qualcomm:ipq8069_firmware:-:*:*:*:*:*:*:*
qualcomm msm8909w_firmware — cpe:2.3:o:qualcomm:msm8909w_firmware:-:*:*:*:*:*:*:*
qualcomm msm8953_firmware — cpe:2.3:o:qualcomm:msm8953_firmware:-:*:*:*:*:*:*:*
qualcomm qca6320_firmware — cpe:2.3:o:qualcomm:qca6320_firmware:-:*:*:*:*:*:*:*
qualcomm qca6390_firmware — cpe:2.3:o:qualcomm:qca6390_firmware:-:*:*:*:*:*:*:*
qualcomm qca6391_firmware — cpe:2.3:o:qualcomm:qca6391_firmware:-:*:*:*:*:*:*:*
qualcomm qca6426_firmware — cpe:2.3:o:qualcomm:qca6426_firmware:-:*:*:*:*:*:*:*
qualcomm qca8337_firmware — cpe:2.3:o:qualcomm:qca8337_firmware:-:*:*:*:*:*:*:*
qualcomm qca9531_firmware — cpe:2.3:o:qualcomm:qca9531_firmware:-:*:*:*:*:*:*:*
qualcomm qca9558_firmware — cpe:2.3:o:qualcomm:qca9558_firmware:-:*:*:*:*:*:*:*
qualcomm qca9561_firmware — cpe:2.3:o:qualcomm:qca9561_firmware:-:*:*:*:*:*:*:*
qualcomm qca9563_firmware — cpe:2.3:o:qualcomm:qca9563_firmware:-:*:*:*:*:*:*:*
qualcomm qca9880_firmware — cpe:2.3:o:qualcomm:qca9880_firmware:-:*:*:*:*:*:*:*
qualcomm qca9882_firmware — cpe:2.3:o:qualcomm:qca9882_firmware:-:*:*:*:*:*:*:*
qualcomm qca9886_firmware — cpe:2.3:o:qualcomm:qca9886_firmware:-:*:*:*:*:*:*:*
qualcomm qca9887_firmware — cpe:2.3:o:qualcomm:qca9887_firmware:-:*:*:*:*:*:*:*
qualcomm qca9888_firmware — cpe:2.3:o:qualcomm:qca9888_firmware:-:*:*:*:*:*:*:*
qualcomm qca9889_firmware — cpe:2.3:o:qualcomm:qca9889_firmware:-:*:*:*:*:*:*:*
qualcomm qca9896_firmware — cpe:2.3:o:qualcomm:qca9896_firmware:-:*:*:*:*:*:*:*
qualcomm qca9898_firmware — cpe:2.3:o:qualcomm:qca9898_firmware:-:*:*:*:*:*:*:*
qualcomm qca9980_firmware — cpe:2.3:o:qualcomm:qca9980_firmware:-:*:*:*:*:*:*:*
qualcomm qca9982_firmware — cpe:2.3:o:qualcomm:qca9982_firmware:-:*:*:*:*:*:*:*
qualcomm qca9984_firmware — cpe:2.3:o:qualcomm:qca9984_firmware:-:*:*:*:*:*:*:*
qualcomm qca9990_firmware — cpe:2.3:o:qualcomm:qca9990_firmware:-:*:*:*:*:*:*:*
qualcomm qca9992_firmware — cpe:2.3:o:qualcomm:qca9992_firmware:-:*:*:*:*:*:*:*
qualcomm qca9994_firmware — cpe:2.3:o:qualcomm:qca9994_firmware:-:*:*:*:*:*:*:*
qualcomm qcm2290_firmware — cpe:2.3:o:qualcomm:qcm2290_firmware:-:*:*:*:*:*:*:*
qualcomm qcm4290_firmware — cpe:2.3:o:qualcomm:qcm4290_firmware:-:*:*:*:*:*:*:*
qualcomm qcm6125_firmware — cpe:2.3:o:qualcomm:qcm6125_firmware:-:*:*:*:*:*:*:*
qualcomm qcs2290_firmware — cpe:2.3:o:qualcomm:qcs2290_firmware:-:*:*:*:*:*:*:*
qualcomm qcs4290_firmware — cpe:2.3:o:qualcomm:qcs4290_firmware:-:*:*:*:*:*:*:*
qualcomm qcs6125_firmware — cpe:2.3:o:qualcomm:qcs6125_firmware:-:*:*:*:*:*:*:*
qualcomm qet4101_firmware — cpe:2.3:o:qualcomm:qet4101_firmware:-:*:*:*:*:*:*:*
qualcomm qrb5165_firmware — cpe:2.3:o:qualcomm:qrb5165_firmware:-:*:*:*:*:*:*:*
qualcomm qsw8573_firmware — cpe:2.3:o:qualcomm:qsw8573_firmware:-:*:*:*:*:*:*:*
qualcomm sd429_firmware — cpe:2.3:o:qualcomm:sd429_firmware:-:*:*:*:*:*:*:*
qualcomm sd460_firmware — cpe:2.3:o:qualcomm:sd460_firmware:-:*:*:*:*:*:*:*
qualcomm sd660_firmware — cpe:2.3:o:qualcomm:sd660_firmware:-:*:*:*:*:*:*:*
qualcomm sd662_firmware — cpe:2.3:o:qualcomm:sd662_firmware:-:*:*:*:*:*:*:*
qualcomm sd665_firmware — cpe:2.3:o:qualcomm:sd665_firmware:-:*:*:*:*:*:*:*
qualcomm sd690_5g_firmware — cpe:2.3:o:qualcomm:sd690_5g_firmware:-:*:*:*:*:*:*:*
qualcomm sd750g_firmware — cpe:2.3:o:qualcomm:sd750g_firmware:-:*:*:*:*:*:*:*
qualcomm sd765_firmware — cpe:2.3:o:qualcomm:sd765_firmware:-:*:*:*:*:*:*:*
qualcomm sd765g_firmware — cpe:2.3:o:qualcomm:sd765g_firmware:-:*:*:*:*:*:*:*
qualcomm sd768g_firmware — cpe:2.3:o:qualcomm:sd768g_firmware:-:*:*:*:*:*:*:*
qualcomm sd855_firmware — cpe:2.3:o:qualcomm:sd855_firmware:-:*:*:*:*:*:*:*
qualcomm sd865_5g_firmware — cpe:2.3:o:qualcomm:sd865_5g_firmware:-:*:*:*:*:*:*:*
qualcomm sd870_firmware — cpe:2.3:o:qualcomm:sd870_firmware:-:*:*:*:*:*:*:*
qualcomm sda429w_firmware — cpe:2.3:o:qualcomm:sda429w_firmware:-:*:*:*:*:*:*:*
qualcomm sdm429w_firmware — cpe:2.3:o:qualcomm:sdm429w_firmware:-:*:*:*:*:*:*:*
qualcomm sdm830_firmware — cpe:2.3:o:qualcomm:sdm830_firmware:-:*:*:*:*:*:*:*
qualcomm sdx55_firmware — cpe:2.3:o:qualcomm:sdx55_firmware:-:*:*:*:*:*:*:*
qualcomm sdx55m_firmware — cpe:2.3:o:qualcomm:sdx55m_firmware:-:*:*:*:*:*:*:*
qualcomm sm4125_firmware — cpe:2.3:o:qualcomm:sm4125_firmware:-:*:*:*:*:*:*:*
qualcomm sm7250_firmware — cpe:2.3:o:qualcomm:sm7250_firmware:-:*:*:*:*:*:*:*
qualcomm wcd9326_firmware — cpe:2.3:o:qualcomm:wcd9326_firmware:-:*:*:*:*:*:*:*
qualcomm wcd9335_firmware — cpe:2.3:o:qualcomm:wcd9335_firmware:-:*:*:*:*:*:*:*
qualcomm wcd9340_firmware — cpe:2.3:o:qualcomm:wcd9340_firmware:-:*:*:*:*:*:*:*
qualcomm wcd9341_firmware — cpe:2.3:o:qualcomm:wcd9341_firmware:-:*:*:*:*:*:*:*
qualcomm wcd9370_firmware — cpe:2.3:o:qualcomm:wcd9370_firmware:-:*:*:*:*:*:*:*
qualcomm wcd9375_firmware — cpe:2.3:o:qualcomm:wcd9375_firmware:-:*:*:*:*:*:*:*
qualcomm wcd9380_firmware — cpe:2.3:o:qualcomm:wcd9380_firmware:-:*:*:*:*:*:*:*
qualcomm wcd9385_firmware — cpe:2.3:o:qualcomm:wcd9385_firmware:-:*:*:*:*:*:*:*
qualcomm wcn3610_firmware — cpe:2.3:o:qualcomm:wcn3610_firmware:-:*:*:*:*:*:*:*
qualcomm wcn3615_firmware — cpe:2.3:o:qualcomm:wcn3615_firmware:-:*:*:*:*:*:*:*
qualcomm wcn3620_firmware — cpe:2.3:o:qualcomm:wcn3620_firmware:-:*:*:*:*:*:*:*
qualcomm wcn3660b_firmware — cpe:2.3:o:qualcomm:wcn3660b_firmware:-:*:*:*:*:*:*:*
qualcomm wcn3680b_firmware — cpe:2.3:o:qualcomm:wcn3680b_firmware:-:*:*:*:*:*:*:*
qualcomm wcn3910_firmware — cpe:2.3:o:qualcomm:wcn3910_firmware:-:*:*:*:*:*:*:*
qualcomm wcn3950_firmware — cpe:2.3:o:qualcomm:wcn3950_firmware:-:*:*:*:*:*:*:*
qualcomm wcn3980_firmware — cpe:2.3:o:qualcomm:wcn3980_firmware:-:*:*:*:*:*:*:*
qualcomm wcn3988_firmware — cpe:2.3:o:qualcomm:wcn3988_firmware:-:*:*:*:*:*:*:*
qualcomm wcn3990_firmware — cpe:2.3:o:qualcomm:wcn3990_firmware:-:*:*:*:*:*:*:*
qualcomm wcn3991_firmware — cpe:2.3:o:qualcomm:wcn3991_firmware:-:*:*:*:*:*:*:*

References for CVE-2021-1947

cvelogic Threat Intelligence