CVE-2022-26320
No known exploitation. EPSS puts it in the 60th percentile. A vendor fix is available.
What to do
The vendor has published a fix. Version details are below where the sources state them.
What it is
From the CVE record
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.
In plain language
No plain-language summary for this CVE yet.
Exploitation
Where each signal puts this CVE on the scale from published to confirmed exploited.
- CISA KEV
Not in the catalog. CISA has not confirmed exploitation.
- Public exploits
No public exploit or proof of concept found in the sources we track.
- EPSS
1.0% chance of exploitation activity in the next 30 days, which ranks it in the 60th percentile of scored CVEs.
Exploit Prediction Scoring System, FIRST.org. A probability, not a confirmation.
Lifecycle
6 events over 983 days, from the signal feeds we watch.
- Patch availableworkaround available, record updated
- Publishedweakness classified, att&ck mapped
Affected products
- imageCLASS LBP236dw / LBP237dwHardware Firmware
- imageCLASS X MF1238 IIHardware Firmware
- imageCLASS X MF1643i II / MF1643iF IIHardware Firmware
- imagePROGRAF TZ-30000 / TZ30000 MFP Z36Hardware Firmware
- imagePROGRAF TX-3100 / TX-3100 MFP Z36Hardware Firmware
- imagePROGRAF TX-4100 / TX-4100 MFP Z36Hardware Firmware
- imageRUNNERF ADVANCE 4551i / 4545i / 4535i / 4525iHardware Firmware
- imageRUNNER ADVANCE 4551i II / 4545i II / 4535i II / 4525i IIHardware Firmware
And 212 more affected products. See all after sign-in
Technical detail
CVSS 3.1 vector
Open in the CVSS calculatorCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:N
Scored 9.1 by NVD.
How it is reached
- Attack Vector NetworkExploitable remotely over the network without any special conditions
- Attack Complexity LowNo special conditions — the attack can be reliably reproduced
- Privileges Required NoneNo authentication required — anyone can exploit this
- User Interaction NoneNo user interaction needed — fully automated exploitation
Scope
- Scope UnchangedImpact is limited to the vulnerable component itself
Impact if exploited
- Confidentiality HighTotal information disclosure — all data in the component is compromised
- Integrity HighTotal loss of integrity — attacker can modify any data in the component
- Availability NoneNo availability impact
Weaknesses
ATT&CK techniques
Mapped from the weaknesses above (CWE to ATT&CK), not observed in attacks.
- Credential AccessT1110Brute Forcemedium confidence
Sources
References in the record
- safezoneswupdate.com/&
- fujifilm.com/fbglobal/eng/company/news/notice/2022/0302_rsakey_announce.html&
- global.canon/en/support/security/index.html&
And 9 more references. See all after sign-in
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