vulntracker.iovulntracker.io
© 2026 vulntracker.io

CVE-2023-4818

HIGH
7.6
CVSS Score
Published: January 15, 2024 at 01:28 PM UTC
Updated: June 17, 2026 at 06:38 AM UTC
2 products affected across 1 vendorPaydroidA920

Using A920 by PAX Technology?

Get instant alerts when new vulnerabilities affect A920 - before attackers find them.

Real-time alertsTrack your software stackFree plan available
Start FreeSign In
Severity
HIGH7.6
Exploit prediction
EPSS 0.7%
SSVC
No known exploit

Description

PAX A920 device allows to downgrade bootloader due to a bug in its version check. The signature is correctly checked and only bootloader signed by PAX can be used. The attacker must have physical USB access to the device in order to exploit this vulnerability.

Affected

Our own answer: ranges merged, affected separated from platform-only, with confidence and review flags.

Paydroid· Paxtechnology
95%
v < A920_AP_Boot_Release_V5.147.1.2_aquarius_11.1.50_20230614
Affected range stops below A920_AP_Boot_Release_V5.14, so it looks safe — our inference, not a vendor statement
paxtechnology-a920 (environment)
A920· Paxtechnologydevice
80%
All versions

Remediation

No guide yet

No remediation guidance has been written for this CVE yet. What the record does show:

Patch and advisory references

References (4)

Technical DescriptionExploitThird Party Advisory
Source: [email protected]
https://blog.stmcyber.com/pax-pos-cves-2023/
Third Party Advisory
Source: [email protected]
https://cert.pl/en/posts/2024/01/CVE-2023-4818/
Third Party Advisory
Source: [email protected]
https://cert.pl/posts/2024/01/CVE-2023-4818/
Vendor AdvisoryPermissions Required
Source: [email protected]
https://ppn.paxengine.com/release/development

SSVC — Action Prioritization

SSVCNo known exploitNot automatablePartial impact

SSVC signals action urgency (what to patch first), separate from CVSS which measures severity.

CVSS

7.6HIGHCISA-ADP
Attack Vector
PHYSICAL
Complexity
LOW
Privileges
NONE
User Interaction
NONE
Scope
CHANGED
Confidentiality
HIGH
Integrity
HIGH
Availability
HIGH
Vector?

Quick Info

StatusMODIFIED
CWE
CWE-74

Get alerted

Stop reading CVE feeds looking for your own stack

Track the products you run and VulnTracker tells you when a new CVE affects them — with what is known about fixing it, and nothing about the rest.

Create accountSign in
Free plan, no card