CVE-2023-33221

Name: CVE-2023-33221
Creator: NVD / NIST
Published: 2023-12-15T12:15:43.927+00:00
License: https://creativecommons.org/publicdomain/zero/1.0/

CRITICALCVSS 9.8/10EPSS 1.03%

Last modified Jun 17, 2026

CVE-2023-33221 is a critical-severity vulnerability rated 9.8/10 on the CVSS scale. When reading DesFire keys, the function that reads the card isn't properly checking the boundaries when copying internally the data received. This allows a heap based buffer overflow that could lead to a potential Remote Code Execution on the targeted device. EPSS estimates a 1.03% chance of exploitation in the next 30 days.

Description

When reading DesFire keys, the function that reads the card isn't properly checking the boundaries when copying internally the data received. This allows a heap based buffer overflow that could lead to a potential Remote Code Execution on the targeted device. This is especially problematic if you use Default DESFire key.

Metrics

CVSS 3.1

9.8/10

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

EPSS Probability

1.03%

59.4th percentile

Probability of exploitation in the next 30 days. Learn more

Weakness Enumeration

Affected Software

Vendor	Product	Versions
Idemia	Sigma Lite Firmware	< 4.15.5
Idemia	Sigma Lite\+ Firmware	< 4.15.5
Idemia	Sigma Extreme Firmware	< 4.15.5
Idemia	Sigma Wide Firmware	< 4.15.5
Idemia	Morphowave Compact Firmware	< 2.12.2
Idemia	Morphowave Xp Firmware	< 2.12.2
Idemia	Visionpass Firmware	< 2.12.2
Idemia	Morphowave Sp Firmware	< 1.2.7

References

https://www.idemia.com/wp-content/uploads/2023/11/Security-Advisory-SA-2023-05-2.pdfVendor Advisory
https://www.idemia.com/wp-content/uploads/2023/11/Security-Advisory-SA-2023-05-2.pdfVendor Advisory

Timeline

Published: Dec 15, 2023
Last Modified: Jun 17, 2026
Status: Modified

Frequently Asked Questions

What is CVE-2023-33221?

How severe is CVE-2023-33221?

CVE-2023-33221 has a CVSS score of 9.8/10 (CRITICAL severity). The EPSS model estimates a 1.03% probability of exploitation in the next 30 days.

How do I fix CVE-2023-33221?

Check the vendor references and advisories linked above for patched versions and mitigation guidance. You can also run a Strix scan to test if your systems are affected.

Are you affected by CVE-2023-33221?

Run a free Strix scan to check your systems for this vulnerability.

Scan your code now

Source: NVD / NIST