CVE-2020-11261: in the CISA KEV catalogue

Qualcomm Multiple Chipsets Improper Input Validation Vulnerability. CISA added CVE-2020-11261 to the Known Exploited Vulnerabilities catalogue on 2021-12-01 with a default due date of 2022-06-01. Known ransomware campaign use: Unknown. Forensic triage flag: No.

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 (CISA description)

Vendor / product: Qualcomm Snapdragon Auto, Snapdragon Compute, Snapdragon Connectivity, Snapdragon Consumer IOT, Snapdragon Industrial IOT, Snapdragon Mobile, Snapdragon Voice & Music, Snapdragon Wearables
CWE: CWE-20
CISA required action: Apply updates per vendor instructions.
EPSS: 1.6%, percentile 75 (scored 2026-11-03)

EPSS puts about 1.6 in 100 odds (1.6%) on exploitation activity being observed in the next 30 days. Its score is higher than or equal to that of 75% of scored CVEs. This is a model estimate about exploitation anywhere, not about your environment.

Vendor and reference links (from CISA)

https://nvd.nist.gov/vuln/detail/CVE-2020-11261

Your own deadline under CISA BOD 26-04 depends on exposure, automatability and technical impact: work it out with the BOD 26-04 calculator.

Data dates. CISA KEV catalogue version 2026.11.03, released 2026-11-03, 1,767 entries (checked 2026-11-03). EPSS model v2026.06.15, scored 2026-11-03, 399,388 CVEs. Sources: CISA and FIRST (EPSS by FIRST; scores generated by Empirical Security). Copied to our own database and refreshed automatically; if a refresh fails, the previous copy keeps serving with its own date.

Frequently asked questions

Is CVE-2020-11261 in the CISA KEV catalogue?

Yes. CISA added CVE-2020-11261 (Qualcomm Multiple Chipsets Improper Input Validation Vulnerability) to the Known Exploited Vulnerabilities catalogue on 2021-12-01. CISA's default due date for it is 2022-06-01.

Is CVE-2020-11261 used in ransomware attacks?

CISA marks known ransomware campaign use as Unknown for CVE-2020-11261. That means CISA lacks confirmation, not that ransomware groups do not use it.

What should I do about CVE-2020-11261?

CISA's required action: Apply updates per vendor instructions.

Sources

CISA, Known Exploited Vulnerabilities Catalog (accessed 2026-11-03)
FIRST, Exploit Prediction Scoring System (EPSS) (EPSS by FIRST; scores generated by Empirical Security)
NVD record for CVE-2020-11261