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Fencer Vulns
medium 4.9

CVE-2021-43774 json

A risky-algorithm issue was discovered on Fujifilm DocuCentre-VI C4471 1.8 devices.

published 2022-03-03 4 y ago modified 2026-06-17 4 mo ago also EUVD-2021-30681

cvss
4.9
version 3.1, NVD
cisa kev
Not listed
not in CISA's catalog
epss
0.7%
EPSS 0.7% chance of exploitation in 30 days, percentile 52%
public exploits
0
none known

Summary

A risky-algorithm issue was discovered on Fujifilm DocuCentre-VI C4471 1.8 devices. An attacker that obtained access to the administrative web interface of a printer (e.g., by using the default credentials) can download the address book file, which contains the list of users (domain users, FTP users, etc.) stored on the printer, together with their encrypted passwords. The passwords are protected by a weak cipher, such as ROT13, which requires minimal effort to instantly retrieve the original password, giving the attacker a list of valid domain or FTP usernames and passwords.

Patch / fix

  • fujifilm apeosport-iv_3065_firmware 1.160.5
  • fujifilm apeosport-iv_3060_firmware 1.160.5
  • fujifilm apeosport-iv_2060_firmware 1.160.5
  • fujifilm apeosport-iv_5070_firmware 1.140.5
  • fujifilm apeosport-iv_4070_firmware 1.140.5
  • fujifilm apeosport-iv_3070_firmware 1.140.5
  • fujifilm apeosport-iv_c4430_firmware 1.772.4
  • fujifilm apeosport-v_4020_firmware 1.57.2
  • fujifilm apeosport-v_4070_firmware 1.57.2
  • fujifilm apeosport-v_5070_firmware 1.57.2
  • fujifilm apeosport-v_c3320_firmware 1.57.2
  • fujifilm apeosport-v_c5585_firmware 1.60.0
  • fujifilm apeosport-v_c6685_firmware 1.60.0
  • fujifilm apeosport-v_c7785_firmware 1.60.0
  • fujifilm apeosport-v_c7775_firmware 1.57.2
  • fujifilm apeosport-v_c6675_firmware 1.57.2
  • fujifilm apeosport-v_c5575_firmware 1.57.2
  • fujifilm apeosport-v_c4475_firmware 1.57.2
  • fujifilm apeosport-v_c3375_firmware 1.57.2
  • fujifilm apeosport-v_c2275_firmware 1.57.2

Exploit prediction

0.69% chance of exploitation in the next 30 days, higher than 52% of all scored CVEs (FIRST EPSS, 2026-11-08).

Exploits and checks

  • foregenix.com https://www.foregenix.com/blogs-new-2021/dude-its-just-a-printer referenced PoC, tagged "exploit" by a source, unverified

CVSS scores

assigned by version score vector
NVD 3.1 4.9 CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:H/I:N/A:N
NVD 2.0 3.5 AV:N/AC:M/Au:S/C:P/I:N/A:N

Classification

Weakness
  • CWE-327 Use of a Broken or Risky Cryptographic Algorithm

References

Sources

Fencer Vulns keeps one entry per vulnerability: the CVE id wins, then GHSA, and records that alias each other are merged, except that two CVEs always keep separate entries. The same data is available as JSON.