Description
Session information easily guessable vulnerability exists in Kyocera Document Solutions MFPs and printers, which may allow a network-adjacent attacker to log in to the product by spoofing a user with guessed session information. Affected products/versions are as follows: TASKalfa 7550ci/6550ci, TASKalfa 5550ci/4550ci/3550ci/3050ci, TASKalfa 255c/205c, TASKalfa 256ci/206ci, ECOSYS M6526cdn/M6526cidn, FS-C2126MFP/C2126MFP+/C2026MFP/C2026MFP+, TASKalfa 8000i/6500i, TASKalfa 5500i/4500i/3500i, TASKalfa 305/255, TASKalfa 306i/256i, LS-3140MFP/3140MFP+/3640MFP, ECOSYS M2535dn, LS-1135MFP/1035MFP, LS-C8650DN/C8600DN, ECOSYS P6026cdn, FS-C5250DN, LS-4300DN/4200DN/2100DN, ECOSYS P4040dn, ECOSYS P2135dn, and FS-1370DN.
References (3)
Core 3
Core References
Vendor Advisory
https://jvn.jp/en/jp/JVN46345126/index.html
Mitigation, Vendor Advisory
https://www.kyoceradocumentsolutions.co.jp/support/information/info_20221101.html
Scores
CVSS v3
6.5
EPSS
0.0059
EPSS Percentile
43.3%
Attack Vector
ADJACENT_NETWORK
CVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N
CISA SSVC
Vulnrichment
Exploitation
none
Automatable
no
Technical Impact
partial
Details
CWE
CWE-290
Status
published
Products (40)
kyocera/ecosys_m2535dn_firmware
kyocera/ecosys_m6526cdn_firmware
kyocera/ecosys_m6526cidn_firmware
kyocera/ecosys_p2135dn_firmware
kyocera/ecosys_p4040dn_firmware
kyocera/ecosys_p6026cdn_firmware
kyocera/fs-1370dn_firmware
kyocera/fs-c2026mfp_firmware
kyocera/fs-c2126mfp\+_firmware
kyocera/fs-c2126mfp_firmware
... and 30 more
Published
Dec 05, 2022
Tracked Since
Feb 18, 2026