How severe is CVE-2022-26320?

CVE-2022-26320 has a CVSS 3.x base score of 9.1, rated critical severity. It is exploitable over network with low attack complexity, requires no privileges and no user interaction. Impact on confidentiality is high, integrity high, and availability none.

Is CVE-2022-26320 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 1% (54th percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2022-26320?

CVE-2022-26320 primarily affects Rambus Safezone Basic Crypto Module. In total, 92 product configurations (CPEs) are listed as vulnerable; see the affected-products list for the exact versions.

How do I fix CVE-2022-26320?

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

When was CVE-2022-26320 published?

CVE-2022-26320 was published on 2022-03-14 and last updated on 2026-06-17.

CVE-2022-26320

CVE-2022-26320 is a critical-severity vulnerability in Rambus Safezone Basic Crypto Module with a CVSS 3.x base score of 9.1. 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-330.

Key facts

Severity: Critical (CVSS 3.x base score 9.1)
CVSS v2: 6.4
EPSS exploit prediction: 1% (54th percentile)
Actively exploited: Not listed in CISA KEV
Weakness: CWE-330
Affected product: Rambus Safezone Basic Crypto Module
Published: 2022-03-14
Last modified: 2026-06-17

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.

Frequently asked questions

What is CVE-2022-26320?: 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.
How severe is CVE-2022-26320?: CVE-2022-26320 has a CVSS 3.x base score of 9.1, rated critical severity. It is exploitable over network with low attack complexity, requires no privileges and no user interaction. Impact on confidentiality is high, integrity high, and availability none.
Is CVE-2022-26320 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 1% (54th percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2022-26320?: CVE-2022-26320 primarily affects Rambus Safezone Basic Crypto Module. In total, 92 product configurations (CPEs) are listed as vulnerable; see the affected-products list for the exact versions.
How do I fix CVE-2022-26320?: Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround. Given its critical severity, prioritise patching exposed systems.
When was CVE-2022-26320 published?: CVE-2022-26320 was published on 2022-03-14 and last updated on 2026-06-17.

References

Affected products (92)

cpe:2.3:a:rambus:safezone_basic_crypto_module:*:*:*:*:non-fips_certified:*:*:*
cpe:2.3:o:fujifilm:apeos_c7070_firmware:*:*:*:*:*:*:*:*
cpe:2.3:o:fujifilm:apeos_c6570_firmware:*:*:*:*:*:*:*:*
cpe:2.3:o:fujifilm:apeos_c5570_firmware:*:*:*:*:*:*:*:*
cpe:2.3:o:fujifilm:apeos_c4570_firmware:*:*:*:*:*:*:*:*
cpe:2.3:o:fujifilm:apeos_c3570_firmware:*:*:*:*:*:*:*:*
cpe:2.3:o:fujifilm:apeos_c3070_firmware:*:*:*:*:*:*:*:*
cpe:2.3:o:fujifilm:apeos_c7070_g_firmware:*:*:*:*:*:*:*:*
cpe:2.3:o:fujifilm:apeos_c6570_g_firmware:*:*:*:*:*:*:*:*
cpe:2.3:o:fujifilm:apeos_c5570_g_firmware:*:*:*:*:*:*:*:*
cpe:2.3:o:fujifilm:apeos_c4570_g_firmware:*:*:*:*:*:*:*:*
cpe:2.3:o:fujifilm:apeos_c3570_g_firmware:*:*:*:*:*:*:*:*
cpe:2.3:o:fujifilm:apeos_c3070_g_firmware:*:*:*:*:*:*:*:*
cpe:2.3:o:fujifilm:apeos_c328_df_firmware:*:*:*:*:*:*:*:*
cpe:2.3:o:fujifilm:apeos_c328_dw_firmware:*:*:*:*:*:*:*:*
cpe:2.3:o:fujifilm:apeos_c325_dw_firmware:*:*:*:*:*:*:*:*
cpe:2.3:o:fujifilm:apeos_c325_z_firmware:*:*:*:*:*:*:*:*
cpe:2.3:o:fujifilm:apeos_c8180_firmware:*:*:*:*:*:*:*:*
cpe:2.3:o:fujifilm:apeos_c7580_firmware:*:*:*:*:*:*:*:*
cpe:2.3:o:fujifilm:apeos_c6580_firmware:*:*:*:*:*:*:*:*
cpe:2.3:o:fujifilm:apeosport_3560_firmware:*:*:*:*:*:*:*:*
cpe:2.3:o:fujifilm:apeosport_3060_firmware:*:*:*:*:*:*:*:*
cpe:2.3:o:fujifilm:apeosport_2560_firmware:*:*:*:*:*:*:*:*
cpe:2.3:o:fujifilm:apeosport_3560_g_firmware:*:*:*:*:*:*:*:*
cpe:2.3:o:fujifilm:apeosport_3060_g_firmware:*:*:*:*:*:*:*:*
cpe:2.3:o:fujifilm:apeosport_2560_g_firmware:*:*:*:*:*:*:*:*
cpe:2.3:o:fujifilm:apeosport_4570_g_firmware:*:*:*:*:*:*:*:*
cpe:2.3:o:fujifilm:apeosport_5570_g_firmware:*:*:*:*:*:*:*:*
cpe:2.3:o:fujifilm:apeosport_4570_firmware:*:*:*:*:*:*:*:*
cpe:2.3:o:fujifilm:apeosport_5570_firmware:*:*:*:*:*:*:*:*
cpe:2.3:o:fujifilm:apeosport_c3060_firmware:*:*:*:*:*:*:*:*
cpe:2.3:o:fujifilm:apeosport_c2560_firmware:*:*:*:*:*:*:*:*
cpe:2.3:o:fujifilm:apeosport_c2060_firmware:*:*:*:*:*:*:*:*
cpe:2.3:o:fujifilm:apeosport_c2560_g_firmware:*:*:*:*:*:*:*:*
cpe:2.3:o:fujifilm:apeosport_c2060_g_firmware:*:*:*:*:*:*:*:*
cpe:2.3:o:fujifilm:apeosport_c7070_firmware:*:*:*:*:*:*:*:*
cpe:2.3:o:fujifilm:apeosport_c4570_firmware:*:*:*:*:*:*:*:*
cpe:2.3:o:fujifilm:apeosport_c3570_firmware:*:*:*:*:*:*:*:*
cpe:2.3:o:fujifilm:apeosport_c3070_firmware:*:*:*:*:*:*:*:*
cpe:2.3:o:fujifilm:apeosport_c6570_firmware:*:*:*:*:*:*:*:*

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