CVE-2022-26320

Name: CVE-2022-26320
Creator: NVD / NIST
Published: 2022-03-14T18:15:08.123+00:00
License: https://creativecommons.org/publicdomain/zero/1.0/

CRITICALCVSS 9.1/10EPSS 0.86%

Last modified Jun 17, 2026

CVE-2022-26320 is a critical-severity vulnerability rated 9.1/10 on the CVSS scale. The Rambus SafeZone Basic Crypto Module before 10.4.0, as used in certain Fujifilm (formerly Fuji Xerox) devices before 2022-03-01, Canon imagePROGRAF and imageRUNNER devices through 2022-03-14, and potentially many other devices, generates RSA keys that can be broken with Fermat's factorization method. This allows efficient calculation of private RSA keys from the public key of a TLS certificate.. EPSS estimates a 0.86% chance of exploitation in the next 30 days.

Description

The Rambus SafeZone Basic Crypto Module before 10.4.0, as used in certain Fujifilm (formerly Fuji Xerox) devices before 2022-03-01, Canon imagePROGRAF and imageRUNNER devices through 2022-03-14, and potentially many other devices, generates RSA keys that can be broken with Fermat's factorization method. This allows efficient calculation of private RSA keys from the public key of a TLS certificate.

Metrics

CVSS 3.1

9.1/10

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

EPSS Probability

0.86%

53.9th percentile

Probability of exploitation in the next 30 days. Learn more

Weakness Enumeration

CWE-330

Affected Software

Vendor	Product	Versions
Rambus	Safezone Basic Crypto Module	>= 9.3.0, < 10.4.0
Fujifilm	Apeos C7070 Firmware	< 1.1.7
Fujifilm	Apeos C6570 Firmware	< 1.1.7
Fujifilm	Apeos C5570 Firmware	< 1.1.7
Fujifilm	Apeos C4570 Firmware	< 1.1.7
Fujifilm	Apeos C3570 Firmware	< 1.1.7
Fujifilm	Apeos C3070 Firmware	< 1.1.7
Fujifilm	Apeos C7070 G Firmware	< 1.1.7
Fujifilm	Apeos C6570 G Firmware	< 1.1.7
Fujifilm	Apeos C5570 G Firmware	< 1.1.7
Fujifilm	Apeos C4570 G Firmware	< 1.1.7
Fujifilm	Apeos C3570 G Firmware	< 1.1.7
Fujifilm	Apeos C3070 G Firmware	< 1.1.7
Fujifilm	Apeos C328 Df Firmware	< 202112062053
Fujifilm	Apeos C328 Dw Firmware	< 202112062053
Fujifilm	Apeos C325 Dw Firmware	< 202112062053
Fujifilm	Apeos C325 Z Firmware	< 202112062053
Fujifilm	Apeos C8180 Firmware	< 1.1.6
Fujifilm	Apeos C7580 Firmware	< 1.1.6
Fujifilm	Apeos C6580 Firmware	< 1.1.6
Fujifilm	Apeosport 3560 Firmware	< 1.60.9
Fujifilm	Apeosport 3060 Firmware	< 1.60.9
Fujifilm	Apeosport 2560 Firmware	< 1.60.9
Fujifilm	Apeosport 3560 G Firmware	< 1.60.9
Fujifilm	Apeosport 3060 G Firmware	< 1.60.9
Fujifilm	Apeosport 2560 G Firmware	< 1.60.9
Fujifilm	Apeosport 4570 G Firmware	< 1.60.9
Fujifilm	Apeosport 5570 G Firmware	< 1.60.9
Fujifilm	Apeosport 4570 Firmware	< 1.60.9
Fujifilm	Apeosport 5570 Firmware	< 1.60.9
Fujifilm	Apeosport C3060 Firmware	< 1.60.9
Fujifilm	Apeosport C2560 Firmware	< 1.60.9
Fujifilm	Apeosport C2060 Firmware	< 1.60.9
Fujifilm	Apeosport C2560 G Firmware	< 1.60.9
Fujifilm	Apeosport C2060 G Firmware	< 1.60.9
Fujifilm	Apeosport C7070 Firmware	< 1.60.9
Fujifilm	Apeosport C4570 Firmware	< 1.60.9
Fujifilm	Apeosport C3570 Firmware	< 1.60.9
Fujifilm	Apeosport C3070 Firmware	< 1.60.9
Fujifilm	Apeosport C6570 Firmware	< 1.60.9
Fujifilm	Apeosport C5570 Firmware	< 1.60.9
Fujifilm	Apeosport C7070 G Firmware	< 1.60.9
Fujifilm	Apeosport C4570 G Firmware	< 1.60.9
Fujifilm	Apeosport C3570 G Firmware	< 1.60.9
Fujifilm	Apeosport C3070 G Firmware	< 1.60.9
Fujifilm	Apeosport C6570 G Firmware	< 1.60.9
Fujifilm	Apeosport C5570 G Firmware	< 1.60.9
Fujifilm	Apeosport Print C5570 Firmware	< 1.60.9
Fujifilm	Apeosport-Vii 5021 Firmware	< 1.60.9
Fujifilm	Apeosport-Vii P4021 Firmware	< 1.60.9

Showing 50 of 92 affected configurations. See NVD for the full list.

References

https://fermatattack.secvuln.infoThird Party Advisory
https://global.canon/en/support/security/index.htmlThird Party Advisory
https://web.archive.org/web/20220922042721/https://safezoneswupdate.com/
https://www.fujifilm.com/fbglobal/eng/company/news/notice/2022/0302_rsakey_announce.htmlMitigation, Third Party Advisory
https://www.rambus.com/security/response-center/advisories/rmbs-2021-01/
https://fermatattack.secvuln.infoThird Party Advisory
https://global.canon/en/support/security/index.htmlThird Party Advisory
https://safezoneswupdate.com
https://www.fujifilm.com/fbglobal/eng/company/news/notice/2022/0302_rsakey_announce.htmlMitigation, Third Party Advisory

Timeline

Published: Mar 14, 2022
Last Modified: Jun 17, 2026
Status: Modified

Frequently Asked Questions

What is CVE-2022-26320?

How severe is CVE-2022-26320?

CVE-2022-26320 has a CVSS score of 9.1/10 (CRITICAL severity). The EPSS model estimates a 0.86% probability of exploitation in the next 30 days.

How do I fix CVE-2022-26320?

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-2022-26320?

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

Scan your code now

Source: NVD / NIST