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CVE-2022-36063

30
FAUCET Score

CVE-2022-36063 is a critical vulnerability affecting Azure RTOS USBx, specifically within its USB CDC ECM host support. An integer underflow and buffer overflow in the _ux_host_class_cdc_ecm_mac_address_get function can be triggered by manipulating the MAC address string descriptor length. This flaw carries a CVSS score of 9.8 (Critical) due to its network-based attack vector, low complexity, and potential for remote code execution or denial of service. While a fix is available in USBX release 6.1.12, there is currently no evidence of active exploitation, public exploit code, or significant community discussion surrounding this vulnerability.

Impacted Technologies

VendorProductVersion(s)CPE
< 6.1.11CPE matchmatch criteria
cpe:2.3:a:eclipse:threadx_usbx:*:*:*:*:*:*:*:*

CVSS Data

CVSS version used by this source: 3.1

7.6HIGH

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

Attack Vector
NETWORK
Attack Complexity
LOW
Privileges Required
LOW
User Interaction
NONE
Scope
UNCHANGED
Confidentiality Impact
LOW
Integrity Impact
LOW
Availability Impact
HIGH
Exploitability Score
2.8
Impact Score
4.7
CvssVersion
3.1

Exploit Intelligence

EPSS Score
1.58%
Probability of exploitation in next 30 days
EPSS Percentile
73.0%
Percentile rank of EPSS score among Peer Group
As of 2026-07-25
Model: v2026.06.15
This CVE's current EPSS score of 0.0158 is in the 60th percentile among its peer group of 36,833 CVEs.

Social Chatter

The average CVE in this peer group has 0.0 Twitter, 0.1 Reddit, 0.3 Bluesky, 0.3 Mastodon, and 2.4 GitHub mentions.

Media Mentions

No media coverage found for this CVE.

The average CVE in this peer group has 0.3 InfoSec Media, 0.0 Vendor Blog, and 0.0 Security Researcher mentions.

Remediation

Patch Available

Vendor Patches (1)

github_advisorypatch availablevia nvd_reference
View patch

References

github.com / azure-rtos/usbx/blob/master/common/usbx_host_classes/src/ux_host_class_cdc_ecm_mac_address_get.c
ExploitThird Party Advisory
github.com / azure-rtos/usbx/releases/tag/v6.1.12_rel
PatchRelease NotesThird Party Advisory
github.com / azure-rtos/usbx/security/advisories/GHSA-chpp-5fv9-6368
ExploitPatchThird Party Advisory