How severe is CVE-2022-41798?

CVE-2022-41798 has a CVSS 3.x base score of 6.5, rated medium severity. It is exploitable over an adjacent network with low attack complexity, requires no privileges and no user interaction. Impact on confidentiality is high, integrity none, and availability none.

Is CVE-2022-41798 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 1% (44th percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2022-41798?

CVE-2022-41798 primarily affects Kyocera Taskalfa 7550ci Firmware. In total, 40 product configurations (CPEs) are listed as vulnerable; see the affected-products list for the exact versions.

How do I fix CVE-2022-41798?

Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround.

When was CVE-2022-41798 published?

CVE-2022-41798 was published on 2022-12-05 and last updated on 2026-06-17.

CVE-2022-41798

CVE-2022-41798 is a medium-severity vulnerability in Kyocera Taskalfa 7550ci Firmware with a CVSS 3.x base score of 6.5. 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-290.

Key facts

Severity: Medium (CVSS 3.x base score 6.5)
EPSS exploit prediction: 1% (44th percentile)
Actively exploited: Not listed in CISA KEV
Weakness: CWE-290
Affected product: Kyocera Taskalfa 7550ci Firmware
Published: 2022-12-05
Last modified: 2026-06-17

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.

Frequently asked questions

What is CVE-2022-41798?: 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.
How severe is CVE-2022-41798?: CVE-2022-41798 has a CVSS 3.x base score of 6.5, rated medium severity. It is exploitable over an adjacent network with low attack complexity, requires no privileges and no user interaction. Impact on confidentiality is high, integrity none, and availability none.
Is CVE-2022-41798 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 1% (44th percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2022-41798?: CVE-2022-41798 primarily affects Kyocera Taskalfa 7550ci Firmware. In total, 40 product configurations (CPEs) are listed as vulnerable; see the affected-products list for the exact versions.
How do I fix CVE-2022-41798?: Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround.
When was CVE-2022-41798 published?: CVE-2022-41798 was published on 2022-12-05 and last updated on 2026-06-17.

References

Affected products (40)

cpe:2.3:o:kyocera:taskalfa_7550ci_firmware:-:*:*:*:*:*:*:*
cpe:2.3:o:kyocera:taskalfa_6550ci_firmware:-:*:*:*:*:*:*:*
cpe:2.3:o:kyocera:taskalfa_5550ci_firmware:-:*:*:*:*:*:*:*
cpe:2.3:o:kyocera:taskalfa_4550ci_firmware:-:*:*:*:*:*:*:*
cpe:2.3:o:kyocera:taskalfa_3550ci_firmware:-:*:*:*:*:*:*:*
cpe:2.3:o:kyocera:taskalfa_3050ci_firmware:-:*:*:*:*:*:*:*
cpe:2.3:o:kyocera:taskalfa_255c_firmware:-:*:*:*:*:*:*:*
cpe:2.3:o:kyocera:taskalfa_205c_firmware:-:*:*:*:*:*:*:*
cpe:2.3:o:kyocera:taskalfa_256ci_firmware:-:*:*:*:*:*:*:*
cpe:2.3:o:kyocera:taskalfa_206ci_firmware:-:*:*:*:*:*:*:*
cpe:2.3:o:kyocera:ecosys_m6526cdn_firmware:-:*:*:*:*:*:*:*
cpe:2.3:o:kyocera:ecosys_m6526cidn_firmware:-:*:*:*:*:*:*:*
cpe:2.3:o:kyocera:fs-c2126mfp_firmware:-:*:*:*:*:*:*:*
cpe:2.3:o:kyocera:fs-c2126mfp\+_firmware:-:*:*:*:*:*:*:*
cpe:2.3:o:kyocera:fs-c2026mfp_firmware:-:*:*:*:*:*:*:*
cpe:2.3:o:kyocera:taskalfa_8000i_firmware:-:*:*:*:*:*:*:*
cpe:2.3:o:kyocera:taskalfa_6500i_firmware:-:*:*:*:*:*:*:*
cpe:2.3:o:kyocera:taskalfa_5500i_firmware:-:*:*:*:*:*:*:*
cpe:2.3:o:kyocera:taskalfa_4500i_firmware:-:*:*:*:*:*:*:*
cpe:2.3:o:kyocera:taskalfa_3500i_firmware:-:*:*:*:*:*:*:*
cpe:2.3:o:kyocera:taskalfa_305_firmware:-:*:*:*:*:*:*:*
cpe:2.3:o:kyocera:taskalfa_255_firmware:-:*:*:*:*:*:*:*
cpe:2.3:o:kyocera:taskalfa_306i_firmware:-:*:*:*:*:*:*:*
cpe:2.3:o:kyocera:taskalfa_256i_firmware:-:*:*:*:*:*:*:*
cpe:2.3:o:kyocera:ls-3140mfp_firmware:-:*:*:*:*:*:*:*
cpe:2.3:o:kyocera:ls-3140mfp\+_firmware:-:*:*:*:*:*:*:*
cpe:2.3:o:kyocera:ls-3640mfp_firmware:-:*:*:*:*:*:*:*
cpe:2.3:o:kyocera:ecosys_m2535dn_firmware:-:*:*:*:*:*:*:*
cpe:2.3:o:kyocera:ls-1135mfp_firmware:-:*:*:*:*:*:*:*
cpe:2.3:o:kyocera:ls-1035mfp_firmware:-:*:*:*:*:*:*:*
cpe:2.3:o:kyocera:ls-c8650dn_firmware:-:*:*:*:*:*:*:*
cpe:2.3:o:kyocera:ls-c8600dn_firmware:-:*:*:*:*:*:*:*
cpe:2.3:o:kyocera:ecosys_p6026cdn_firmware:-:*:*:*:*:*:*:*
cpe:2.3:o:kyocera:fs-c5250dn_firmware:-:*:*:*:*:*:*:*
cpe:2.3:o:kyocera:ls-4300dn_firmware:-:*:*:*:*:*:*:*
cpe:2.3:o:kyocera:ls-4200dn_firmware:-:*:*:*:*:*:*:*
cpe:2.3:o:kyocera:ls-2100dn_firmware:-:*:*:*:*:*:*:*
cpe:2.3:o:kyocera:ecosys_p4040dn_firmware:-:*:*:*:*:*:*:*
cpe:2.3:o:kyocera:ecosys_p2135dn_firmware:-:*:*:*:*:*:*:*
cpe:2.3:o:kyocera:fs-1370dn_firmware:-:*:*:*:*:*:*:*

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