How severe is CVE-2023-4818?

CVE-2023-4818 has a CVSS 3.x base score of 7.6, rated high severity. It is exploitable over physical access with low attack complexity, requires no privileges and no user interaction. Impact on confidentiality is high, integrity high, and availability high.

Is CVE-2023-4818 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 1% (47th percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2023-4818?

CVE-2023-4818 affects Paxtechnology Paydroid. See the affected-products list for the exact vulnerable versions.

How do I fix CVE-2023-4818?

Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround. Given its high severity, prioritise patching exposed systems.

Does CVE-2023-4818 have an EU (EUVD) identifier?

Yes. CVE-2023-4818 is tracked in the ENISA EU Vulnerability Database (EUVD) as EUVD-2023-54661.

When was CVE-2023-4818 published?

CVE-2023-4818 was published on 2024-01-15 and last updated on 2026-06-17.

CVE-2023-4818

CVE-2023-4818 is a high-severity vulnerability in Paxtechnology Paydroid with a CVSS 3.x base score of 7.6. It is not currently listed as actively exploited by CISA, and its EPSS exploit-prediction score is low. The underlying weakness is classified as CWE-74.

Key facts

Severity: High (CVSS 3.x base score 7.6)
EPSS exploit prediction: 1% (47th percentile)
Actively exploited: Not listed in CISA KEV
EU (EUVD) id: EUVD-2023-54661
Weakness: CWE-74
Affected product: Paxtechnology Paydroid
Published: 2024-01-15
Last modified: 2026-06-17

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.

Frequently asked questions

What is CVE-2023-4818?: 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.
How severe is CVE-2023-4818?: CVE-2023-4818 has a CVSS 3.x base score of 7.6, rated high severity. It is exploitable over physical access with low attack complexity, requires no privileges and no user interaction. Impact on confidentiality is high, integrity high, and availability high.
Is CVE-2023-4818 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 1% (47th percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2023-4818?: CVE-2023-4818 affects Paxtechnology Paydroid. See the affected-products list for the exact vulnerable versions.
How do I fix CVE-2023-4818?: Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround. Given its high severity, prioritise patching exposed systems.
Does CVE-2023-4818 have an EU (EUVD) identifier?: Yes. CVE-2023-4818 is tracked in the ENISA EU Vulnerability Database (EUVD) as EUVD-2023-54661.
When was CVE-2023-4818 published?: CVE-2023-4818 was published on 2024-01-15 and last updated on 2026-06-17.

References

Affected products (1)

cpe:2.3:o:paxtechnology:paydroid:7.1.2_aquarius_11.1.50_20230614:*:*:*:*:*:*:*

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