What is CVE-2022-40297?

CVE-2022-40297 is a high-severity vulnerability in Ubports Ubuntu Touch, classified under Improper Privilege Management. CVSS score: 7.8/10. Published 2022-09-09.

How severe is CVE-2022-40297?

High severity. CVSS v3 base score is 7.8 out of 10.

Is CVE-2022-40297 known to be exploited?

13 public proof-of-concept repositories are indexed. Not currently listed in the CISA KEV catalog.

Privilege escalation in Ubports Ubuntu Touch

CVE-2022-40297

UBports Ubuntu Touch 16.04 allows the screen-unlock passcode to be used for a privileged shell via Sudo. This passcode is only four digits, far below typical length/complexity for a user account's password. NOTE: a third party states "The described attack cannot be executed as demonstrated.

Vulnerability class: Privilege Escalation

Published 2022-09-09 · last modified 2026-06-17.

CVSS v3 metric

CVSS v3 base score 7.8 (High). Vector: CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H.

EPSS exploit prediction

EPSS: 0.005 (38.2th percentile), scored 2026-09-29.

Very low probability of exploitation in the next 30 days; routine patching cadence is appropriate. 38th percentile — 38.2% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.

EPSS over last 30 days · oldest: 0.005 · newest: 0.005 · change: +0.000

Affected products

Ubports Ubuntu Touch — versions 16.04

Weakness classification (CWE)

CWE-269 — Improper Privilege Management

Public proof-of-concept exploits

References

github.com/filipkarc/PoC-ubuntutouch-pin-privesc (Exploit, Third Party Advisory)

Frequently asked questions

What is CVE-2022-40297?: CVE-2022-40297 is a high-severity vulnerability in Ubports Ubuntu Touch, classified under Improper Privilege Management. CVSS score: 7.8/10. Published 2022-09-09.
How severe is CVE-2022-40297?: High severity. CVSS v3 base score is 7.8 out of 10.
Is CVE-2022-40297 known to be exploited?: 13 public proof-of-concept repositories are indexed. Not currently listed in the CISA KEV catalog.