How severe is CVE-2020-11261?

CVE-2020-11261 has a CVSS score of 7.8/10, rated HIGH. Immediate patching is strongly recommended.

Which packages are affected by CVE-2020-11261?

Affected package information for CVE-2020-11261 is not yet fully mapped. Check the official advisory links for details.

How do I fix CVE-2020-11261?

No fixed version has been published for CVE-2020-11261 yet. Monitor the advisory for updates, apply mitigations recommended by the vendor, and use O3 Security to track when a fix becomes available in your stack.

Is CVE-2020-11261 actively exploited in the wild?

Yes. There are 2 known exploit references for CVE-2020-11261, including 2 in-the-wild exploitations observed on GitHub and other sources. Treat this as actively exploitable and prioritize patching immediately. All exploit code should only be run in an isolated sandbox environment for research or authorized testing — never against production systems without explicit written authorization.

What is the EPSS score for CVE-2020-11261?

CVE-2020-11261 has an EPSS (Exploit Prediction Scoring System) score of 0.8%, placing it in the 75th percentile of all CVEs. EPSS is maintained by FIRST.org and estimates the probability that a vulnerability will be exploited in the wild within the next 30 days. This score indicates relatively lower exploitation probability, though the CVSS severity should still guide your patching priority.

Is CVE-2020-11261 in the CISA Known Exploited Vulnerabilities catalog?

Yes. CVE-2020-11261 (Qualcomm Multiple Chipsets Improper Input Validation Vulnerability) was added to CISA's Known Exploited Vulnerabilities (KEV) catalog on 2021-12-01. CISA required all US federal civilian agencies to remediate this vulnerability by 2022-06-01. The required action was: Apply updates per vendor instructions. Being listed in the KEV catalog is the strongest possible confirmation of active exploitation — treat this as a critical priority.

What type of vulnerability is CVE-2020-11261?

CVE-2020-11261 is classified as Out-of-bounds Write (CWE-787), Improper Input Validation (CWE-20). These weakness types describe the underlying flaw category, which helps determine the potential impact and the right class of mitigation.

Which products and versions are affected by CVE-2020-11261?

CVE-2020-11261 affects qualcomm apq8009 firmware; qualcomm apq8009w firmware; qualcomm apq8017 firmware; qualcomm apq8037 firmware, and 395 more product(s). Check the affected-products list on this page against your deployed version to confirm exposure.

When was CVE-2020-11261 published, and has it been updated?

CVE-2020-11261 was published on June 9, 2021 and was last updated on October 28, 2025. Advisory data evolves as severity scores, affected ranges, and exploit intelligence are revised — always check the latest version of the advisory before acting.

CISA KEV·Added 2021-12-01 — agencies required to remediate by 2022-06-01

CVE-2020-11261

HIGH

Memory corruption due to improper check to return error when user application requests memory allocation of a huge size in Snapdragon Auto, Snapdragon Compute, Snapdragon Connectivity,…

Published

Jun 9, 2021

Updated

Oct 28, 2025

Affected

0 pkgs

Patched

None yet

Exploits

2 known

EPSS Exploitation Probability

via FIRST.org ↗

0.8%probability of exploitation in next 30 days

Lower Risk75th percentile0.00%

EPSS (Exploit Prediction Scoring System) is a daily probability model maintained by FIRST.org. It estimates the likelihood a CVE will be exploited in production environments within the next 30 days, derived from real-world threat intelligence signals.

Description

Memory corruption due to improper check to return error when user application requests memory allocation of a huge size in Snapdragon Auto, Snapdragon Compute, Snapdragon Connectivity, Snapdragon Consumer IOT, Snapdragon Industrial IOT, Snapdragon Mobile, Snapdragon Voice & Music, Snapdragon Wearables

Affected Products

399 products · 399 configurations

apq8009 firmwarequalcomm

all

apq8009w firmwarequalcomm

all

apq8017 firmwarequalcomm

all

apq8037 firmwarequalcomm

all

apq8053 firmwarequalcomm

all

apq8064au firmwarequalcomm

all

Exploits & PoCs

Research use only. For defensive security, authorized penetration testing, and academic research only. Never execute exploit code against systems without explicit written authorization.

Memory corruption due to improper check to return error when user applic…

source.android.comGoogle-sheetJul 2020

Memory corruption due to improper check to return error when user applic…

cisa.govCISADec 2021

Frequently Asked Questions

O3 Security · Impact-Aware SCA

Is CVE-2020-11261 in your stack?

O3 detects CVE-2020-11261 across dependencies and uses function-level reachability to confirm whether the vulnerable code path is actually reachable — not just present. No false positives.

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