CVE-2021-1912

Possible integer overflow can occur due to improper length check while calculating count and grace period in Snapdragon Auto, Snapdragon Compute, Snapdragon Connectivity, Snapdragon Industrial IOT, Snapdragon Mobile

Published: 2021-11-12 Last update: 2026-06-16 Assigner: [email protected] Source: [email protected]
NVD Status：Modified，CVE State: published
View at NVD, CVE.org, EUVD

CVE-2021-1912 is rated Low Risk (35.3/100): 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-2021-1912

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 0.03% 0.15% +0.12%
2 2025-03-30 0.06% 0.03% -0.03%
3 2025-03-29 — 0.06% —

Full EPSS history (8 records total)

Common vulnerability scoring system (CVSS) metrics for CVE-2021-1912

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-2021-1912

Affected software / configurations for CVE-2021-1912

Vendor Product Version Raw CPE
qualcomm aqt1000_firmware — cpe:2.3:o:qualcomm:aqt1000_firmware:-:*:*:*:*:*:*:*
qualcomm ar8035_firmware — cpe:2.3:o:qualcomm:ar8035_firmware:-:*:*:*:*:*:*:*
qualcomm csrb31024_firmware — cpe:2.3:o:qualcomm:csrb31024_firmware:-:*:*:*:*:*:*:*
qualcomm qca6174a_firmware — cpe:2.3:o:qualcomm:qca6174a_firmware:-:*:*:*:*:*:*:*
qualcomm qca6390_firmware — cpe:2.3:o:qualcomm:qca6390_firmware:-:*:*:*:*:*:*:*
qualcomm qca6391_firmware — cpe:2.3:o:qualcomm:qca6391_firmware:-:*:*:*:*:*:*:*
qualcomm qca6420_firmware — cpe:2.3:o:qualcomm:qca6420_firmware:-:*:*:*:*:*:*:*
qualcomm qca6421_firmware — cpe:2.3:o:qualcomm:qca6421_firmware:-:*:*:*:*:*:*:*
qualcomm qca6426_firmware — cpe:2.3:o:qualcomm:qca6426_firmware:-:*:*:*:*:*:*:*
qualcomm qca6430_firmware — cpe:2.3:o:qualcomm:qca6430_firmware:-:*:*:*:*:*:*:*
qualcomm qca6431_firmware — cpe:2.3:o:qualcomm:qca6431_firmware:-:*:*:*:*:*:*:*
qualcomm qca6436_firmware — cpe:2.3:o:qualcomm:qca6436_firmware:-:*:*:*:*:*:*:*
qualcomm qca6564au_firmware — cpe:2.3:o:qualcomm:qca6564au_firmware:-:*:*:*:*:*:*:*
qualcomm qca6574a_firmware — cpe:2.3:o:qualcomm:qca6574a_firmware:-:*:*:*:*:*:*:*
qualcomm qca6574au_firmware — cpe:2.3:o:qualcomm:qca6574au_firmware:-:*:*:*:*:*:*:*
qualcomm qca6584au_firmware — cpe:2.3:o:qualcomm:qca6584au_firmware:-:*:*:*:*:*:*:*
qualcomm qca6595au_firmware — cpe:2.3:o:qualcomm:qca6595au_firmware:-:*:*:*:*:*:*:*
qualcomm qca6696_firmware — cpe:2.3:o:qualcomm:qca6696_firmware:-:*:*:*:*:*:*:*
qualcomm qca8337_firmware — cpe:2.3:o:qualcomm:qca8337_firmware:-:*:*:*:*:*:*:*
qualcomm qca9377_firmware — cpe:2.3:o:qualcomm:qca9377_firmware:-:*:*:*:*:*:*:*
qualcomm qcx315_firmware — cpe:2.3:o:qualcomm:qcx315_firmware:-:*:*:*:*:*:*:*
qualcomm sa415m_firmware — cpe:2.3:o:qualcomm:sa415m_firmware:-:*:*:*:*:*:*:*
qualcomm sa515m_firmware — cpe:2.3:o:qualcomm:sa515m_firmware:-:*:*:*:*:*:*:*
qualcomm sd_8c_firmware — cpe:2.3:o:qualcomm:sd_8c_firmware:-:*:*:*:*:*:*:*
qualcomm sd_8cx_firmware — cpe:2.3:o:qualcomm:sd_8cx_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 sdx24_firmware — cpe:2.3:o:qualcomm:sdx24_firmware:-:*:*:*:*:*:*:*
qualcomm sdx55_firmware — cpe:2.3:o:qualcomm:sdx55_firmware:-:*:*:*:*:*:*:*
qualcomm sdx55m_firmware — cpe:2.3:o:qualcomm:sdx55m_firmware:-:*:*:*:*:*:*:*
qualcomm sdxr2_5g_firmware — cpe:2.3:o:qualcomm:sdxr2_5g_firmware:-:*:*:*:*:*:*:*
qualcomm wcd9340_firmware — cpe:2.3:o:qualcomm:wcd9340_firmware:-:*:*:*:*:*:*:*
qualcomm wcd9341_firmware — cpe:2.3:o:qualcomm:wcd9341_firmware:-:*:*:*:*:*:*:*
qualcomm wcd9380_firmware — cpe:2.3:o:qualcomm:wcd9380_firmware:-:*:*:*:*:*:*:*
qualcomm wcd9385_firmware — cpe:2.3:o:qualcomm:wcd9385_firmware:-:*:*:*:*:*:*:*
qualcomm wcn3998_firmware — cpe:2.3:o:qualcomm:wcn3998_firmware:-:*:*:*:*:*:*:*
qualcomm wcn6750_firmware — cpe:2.3:o:qualcomm:wcn6750_firmware:-:*:*:*:*:*:*:*
qualcomm wcn6850_firmware — cpe:2.3:o:qualcomm:wcn6850_firmware:-:*:*:*:*:*:*:*
qualcomm wcn6851_firmware — cpe:2.3:o:qualcomm:wcn6851_firmware:-:*:*:*:*:*:*:*
qualcomm wsa8810_firmware — cpe:2.3:o:qualcomm:wsa8810_firmware:-:*:*:*:*:*:*:*
qualcomm wsa8815_firmware — cpe:2.3:o:qualcomm:wsa8815_firmware:-:*:*:*:*:*:*:*

References for CVE-2021-1912

cvelogic Threat Intelligence