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CVE-2020-11209

16
FAUCET Score

CVE-2020-11209 describes an improper authorization vulnerability in the DSP process of various Qualcomm Snapdragon chipsets, including the SD820, SD855, and SD660, among others. This flaw allows unauthorized users to downgrade library versions. With a CVSS score of 5.5 (Medium), it requires local access and low attack complexity, potentially leading to high integrity impact without affecting confidentiality or availability. While there is no known active exploitation or public exploit code, the vulnerability has garnered significant community discussion and media coverage, indicating awareness of its potential impact on a wide range of affected devices.

Impacted Technologies

VendorProductVersion(s)CPE
Range not provided by sourceCPE matchmatch criteria
cpe:2.3:o:qualcomm:sd820_firmware:-:*:*:*:*:*:*:*
Range not provided by sourceCPE matchmatch criteria
cpe:2.3:o:qualcomm:sd821_firmware:-:*:*:*:*:*:*:*
Range not provided by sourceCPE matchmatch criteria
cpe:2.3:o:qualcomm:qcs603_firmware:-:*:*:*:*:*:*:*
Range not provided by sourceCPE matchmatch criteria
cpe:2.3:o:qualcomm:qcs605_firmware:-:*:*:*:*:*:*:*
Range not provided by sourceCPE matchmatch criteria
cpe:2.3:o:qualcomm:sda855_firmware:-:*:*:*:*:*:*:*

CVSS Data

CVSS version used by this source: 3.1

5.5MEDIUM

CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:H/A:N

Attack Vector
LOCAL
Attack Complexity
LOW
Privileges Required
LOW
User Interaction
NONE
Scope
UNCHANGED
Confidentiality Impact
NONE
Integrity Impact
HIGH
Availability Impact
NONE
Exploitability Score
1.8
Impact Score
3.6
CvssVersion
3.1

Exploit Intelligence

EPSS Score
1.57%
Probability of exploitation in next 30 days
EPSS Percentile
72.8%
Percentile rank of EPSS score among Peer Group
As of 2026-07-26
Model: v2026.06.15
This CVE's current EPSS score of 0.0157 is in the 98th percentile among its peer group of 15,938 CVEs.

Social Chatter

No social media mentions found for this CVE.

The average CVE in this peer group has 0.0 Twitter, 0.0 Reddit, 0.0 Bluesky, 0.0 Mastodon, and 0.1 GitHub mentions.

Media Mentions

The average CVE in this peer group has 0.1 InfoSec Media, 0.0 Vendor Blog, and 0.0 Security Researcher mentions.

Remediation

Patch Available

Vendor Patches (1)

coollabspatch availablevia llm_extracted

Vendor Advisories (1)

coollabsllm-coollabs-290e89308977c65dHIGH

Mobility Products RCE and DOS Vulnerabilities

Aug 14, 2020

References

blog.checkpoint.com / 2020/08/06/achilles-small-chip-big-peril
Third Party Advisory
research.checkpoint.com / 2021/pwn2own-qualcomm-dsp
ExploitThird Party Advisory
qualcomm.com / company/product-security/bulletins/november-2020-bulletin
Broken LinkVendor Advisory