CVE-2021-20679

Fuji Xerox multifunction devices and printers (DocuCentre-VII C7773/C6673/C5573/C4473/C3373/C3372/C2273, DocuCentre-VII C7788/C6688/C5588, ApeosPort-VII C7773/C6673/C5573/C4473/C3373/C3372 C2273, ApeosPort-VII C7788/C6688/C5588, ApeosPort C7070/C6570/C5570/C4570/C3570/C3070/C7070G/C6570G/C5570G/C4570G/C3570G/C3070G, ApeosPort-VII C4421/C3321, ApeosPort C3060/C2560/C2060/C3060G/C2560G/C2060G, ApeosPort-VII CP4421, ApeosPort Print C5570, ApeosPort 5570/4570/5570G/4570G, ApeosPort 3560/3060/2560/3560G/3060G/2560G, ApeosPort-VII 5021/ 4021, ApeosPort-VII P5021, DocuPrint CP 555 d/505 d, DocuPrint P505 d, PrimeLink C9065/C9070, DocuPrint CP475AP, and DocuPrint P475AP) allow an attacker to cause a denial of service (DoS) condition and abnormal end (ABEND) of the affected products via sending a specially crafted command.

Published: 2021-03-25 Last update: 2024-11-21 Assigner: [email protected] Source: [email protected]
NVD Status：Modified，CVE State: published
View at NVD, CVE.org, EUVD

CVE-2021-20679 is rated Moderate Risk (52.2/100): CVSS High severity, with medium exploitation likelihood (EPSS 0.51%). Review affected assets and schedule remediation.

Risk is dynamic; we continuously reassess and refresh what is shown on this page as upstream context changes.

Exploit prediction scoring system (EPSS) score for CVE-2021-20679

EPSS lead: Daily EPSS estimates relative likelihood of exploitation; percentile ranks this CVE among scored vulnerabilities (higher = more severe relative rank).

# Date Old EPSS score New EPSS score Delta (New - Old)
1 2025-03-30 0.62% 0.51% -0.11%
2 2025-03-29 0.51% 0.62% +0.11%
3 2025-03-17 — 0.51% —

Full EPSS history (9 records total)

Common vulnerability scoring system (CVSS) metrics for CVE-2021-20679

CVSS metrics for this CVE.

Base score Version Severity Vector Exploitability Impact Score source
7.5 3.1 HIGH
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H Click to expand
Attack vector (AV:N)
Could be attacked over the internet or any normal routed network—not just someone sitting at the machine.
Attack complexity (AC:L)
Once they can reach the bug, pulling it off is straightforward—no weird race conditions or rare setup.
Privileges required (PR:N)
No account or special rights needed—anonymous or random user is enough.
User interaction (UI:N)
Nobody has to click “OK” or open a trap file; it can work without a victim helping.
Scope (S:U)
Damage stays in the same “trust bubble” as the broken component—no big spill into unrelated systems.
Confidentiality (C:N)
Doesn’t really leak secrets in a meaningful way.
Integrity (I:N)
Data isn’t meaningfully altered or forged.
Availability (A:H)
Could take the service down hard or make it unusable for people who depend on it.
 3.9 3.6 [email protected]
7.8 2.0 HIGH
AV:N/AC:L/Au:N/C:N/I:N/A:C Click to expand
Access vector (AV:N)
Can be exploited remotely over network reachability.
Access complexity (AC:L)
Exploitation conditions are straightforward and predictable.
Authentication (AU:N)
No authentication is required.
Confidentiality impact (C:N)
No confidentiality impact.
Integrity impact (I:N)
No integrity impact.
Availability impact (A:C)
Complete availability impact.
 10.0 6.9 [email protected]

Weakness enumeration for CVE-2021-20679

Affected software / configurations for CVE-2021-20679

Vendor Product Version Raw CPE
fujixerox docucentre-vii_c7773_firmware — cpe:2.3:o:fujixerox:docucentre-vii_c7773_firmware:-:*:*:*:*:*:*:*
fujixerox docucentre-vii_c6673_firmware — cpe:2.3:o:fujixerox:docucentre-vii_c6673_firmware:-:*:*:*:*:*:*:*
fujixerox docucentre-vii_c5573_firmware — cpe:2.3:o:fujixerox:docucentre-vii_c5573_firmware:-:*:*:*:*:*:*:*
fujixerox docucentre-vii_c4473_firmware — cpe:2.3:o:fujixerox:docucentre-vii_c4473_firmware:-:*:*:*:*:*:*:*
fujixerox docucentre-vii_c3373_firmware — cpe:2.3:o:fujixerox:docucentre-vii_c3373_firmware:-:*:*:*:*:*:*:*
fujixerox docucentre-vii_c3372_firmware — cpe:2.3:o:fujixerox:docucentre-vii_c3372_firmware:-:*:*:*:*:*:*:*
fujixerox docucentre-vii_c2273_firmware — cpe:2.3:o:fujixerox:docucentre-vii_c2273_firmware:-:*:*:*:*:*:*:*
fujixerox apeosport_c2570_firmware — cpe:2.3:o:fujixerox:apeosport_c2570_firmware:-:*:*:*:*:*:*:*
fujixerox apeosport-vii_c4422_firmware — cpe:2.3:o:fujixerox:apeosport-vii_c4422_firmware:-:*:*:*:*:*:*:*
fujixerox apeosport-vii_c3322_firmware — cpe:2.3:o:fujixerox:apeosport-vii_c3322_firmware:-:*:*:*:*:*:*:*
fujixerox apeosport_c2360_firmware — cpe:2.3:o:fujixerox:apeosport_c2360_firmware:-:*:*:*:*:*:*:*
fujixerox apeosport_c2060_firmware — cpe:2.3:o:fujixerox:apeosport_c2060_firmware:-:*:*:*:*:*:*:*
fujixerox apeosport-vii_cp4422_firmware — cpe:2.3:o:fujixerox:apeosport-vii_cp4422_firmware:-:*:*:*:*:*:*:*
fujixerox apeosport-vii_cp3322_firmware — cpe:2.3:o:fujixerox:apeosport-vii_cp3322_firmware:-:*:*:*:*:*:*:*
fujixerox apeosport_print_c4570_firmware — cpe:2.3:o:fujixerox:apeosport_print_c4570_firmware:-:*:*:*:*:*:*:*
fujixerox apeosport_3570_firmware — cpe:2.3:o:fujixerox:apeosport_3570_firmware:-:*:*:*:*:*:*:*
fujixerox apeosport_1860_firmware — cpe:2.3:o:fujixerox:apeosport_1860_firmware:-:*:*:*:*:*:*:*
fujixerox apeosport-vii_5022_firmware — cpe:2.3:o:fujixerox:apeosport-vii_5022_firmware:-:*:*:*:*:*:*:*
fujixerox apeosport-vii_p4022_firmware — cpe:2.3:o:fujixerox:apeosport-vii_p4022_firmware:-:*:*:*:*:*:*:*
fujixerox docucentre-vi_c2264_firmware — cpe:2.3:o:fujixerox:docucentre-vi_c2264_firmware:-:*:*:*:*:*:*:*
fujixerox docuprint_cp500_d_firmware — cpe:2.3:o:fujixerox:docuprint_cp500_d_firmware:-:*:*:*:*:*:*:*
fujixerox docucentre-vii_c7788_firmware — cpe:2.3:o:fujixerox:docucentre-vii_c7788_firmware:-:*:*:*:*:*:*:*
fujixerox docucentre-vii_c6688_firmware — cpe:2.3:o:fujixerox:docucentre-vii_c6688_firmware:-:*:*:*:*:*:*:*
fujixerox docucentre-vii_c5588_firmware — cpe:2.3:o:fujixerox:docucentre-vii_c5588_firmware:-:*:*:*:*:*:*:*
fujixerox apeosport-vii_c7773_firmware — cpe:2.3:o:fujixerox:apeosport-vii_c7773_firmware:-:*:*:*:*:*:*:*
fujixerox apeosport-vii_c6673_firmware — cpe:2.3:o:fujixerox:apeosport-vii_c6673_firmware:-:*:*:*:*:*:*:*
fujixerox apeosport-vii_c5573_firmware — cpe:2.3:o:fujixerox:apeosport-vii_c5573_firmware:-:*:*:*:*:*:*:*
fujixerox apeosport-vii_c4473_firmware — cpe:2.3:o:fujixerox:apeosport-vii_c4473_firmware:-:*:*:*:*:*:*:*
fujixerox apeosport-vii_c3373_firmware — cpe:2.3:o:fujixerox:apeosport-vii_c3373_firmware:-:*:*:*:*:*:*:*
fujixerox apeosport-vii_c3372_firmware — cpe:2.3:o:fujixerox:apeosport-vii_c3372_firmware:-:*:*:*:*:*:*:*
fujixerox apeosport-vii_c2273_firmware — cpe:2.3:o:fujixerox:apeosport-vii_c2273_firmware:-:*:*:*:*:*:*:*
fujixerox apeosport-vii_c7788_firmware — cpe:2.3:o:fujixerox:apeosport-vii_c7788_firmware:-:*:*:*:*:*:*:*
fujixerox apeosport-vii_c6688_firmware — cpe:2.3:o:fujixerox:apeosport-vii_c6688_firmware:-:*:*:*:*:*:*:*
fujixerox apeosport-vii_c5588_firmware — cpe:2.3:o:fujixerox:apeosport-vii_c5588_firmware:-:*:*:*:*:*:*:*
fujixerox apeosport_c7070_firmware — cpe:2.3:o:fujixerox:apeosport_c7070_firmware:-:*:*:*:*:*:*:*
fujixerox apeosport_c6570_firmware — cpe:2.3:o:fujixerox:apeosport_c6570_firmware:-:*:*:*:*:*:*:*
fujixerox apeosport_c5570_firmware — cpe:2.3:o:fujixerox:apeosport_c5570_firmware:-:*:*:*:*:*:*:*
fujixerox apeosport_c4570_firmware — cpe:2.3:o:fujixerox:apeosport_c4570_firmware:-:*:*:*:*:*:*:*
fujixerox apeosport_c3570_firmware — cpe:2.3:o:fujixerox:apeosport_c3570_firmware:-:*:*:*:*:*:*:*
fujixerox apeosport_c3070_firmware — cpe:2.3:o:fujixerox:apeosport_c3070_firmware:-:*:*:*:*:*:*:*
fujixerox apeosport_c7070g_firmware — cpe:2.3:o:fujixerox:apeosport_c7070g_firmware:-:*:*:*:*:*:*:*
fujixerox apeosport_c6570g_firmware — cpe:2.3:o:fujixerox:apeosport_c6570g_firmware:-:*:*:*:*:*:*:*
fujixerox apeosport_c5570g_firmware — cpe:2.3:o:fujixerox:apeosport_c5570g_firmware:-:*:*:*:*:*:*:*
fujixerox apeosport_c4570g_firmware — cpe:2.3:o:fujixerox:apeosport_c4570g_firmware:-:*:*:*:*:*:*:*
fujixerox apeosport_c3570g_firmware — cpe:2.3:o:fujixerox:apeosport_c3570g_firmware:-:*:*:*:*:*:*:*
fujixerox apeosport_c3070g_firmware — cpe:2.3:o:fujixerox:apeosport_c3070g_firmware:-:*:*:*:*:*:*:*
fujixerox apeosport-vii_c4421_firmware — cpe:2.3:o:fujixerox:apeosport-vii_c4421_firmware:-:*:*:*:*:*:*:*
fujixerox apeosport-vii_c3321_firmware — cpe:2.3:o:fujixerox:apeosport-vii_c3321_firmware:-:*:*:*:*:*:*:*
fujixerox apeosport_c3060_firmware — cpe:2.3:o:fujixerox:apeosport_c3060_firmware:-:*:*:*:*:*:*:*
fujixerox apeosport_c2560_firmware — cpe:2.3:o:fujixerox:apeosport_c2560_firmware:-:*:*:*:*:*:*:*
fujixerox apeosport_c3060g_firmware — cpe:2.3:o:fujixerox:apeosport_c3060g_firmware:-:*:*:*:*:*:*:*
fujixerox apeosport_c2560g_firmware — cpe:2.3:o:fujixerox:apeosport_c2560g_firmware:-:*:*:*:*:*:*:*
fujixerox apeosport_c2060g_firmware — cpe:2.3:o:fujixerox:apeosport_c2060g_firmware:-:*:*:*:*:*:*:*
fujixerox apeosport-vii_cp4421_firmware — cpe:2.3:o:fujixerox:apeosport-vii_cp4421_firmware:-:*:*:*:*:*:*:*
fujixerox apeosport_print_c5570_firmware — cpe:2.3:o:fujixerox:apeosport_print_c5570_firmware:-:*:*:*:*:*:*:*
fujixerox apeosport_5570_firmware — cpe:2.3:o:fujixerox:apeosport_5570_firmware:-:*:*:*:*:*:*:*
fujixerox apeosport_4570_firmware — cpe:2.3:o:fujixerox:apeosport_4570_firmware:-:*:*:*:*:*:*:*
fujixerox apeosport_5570g_firmware — cpe:2.3:o:fujixerox:apeosport_5570g_firmware:-:*:*:*:*:*:*:*
fujixerox apeosport_4570g_firmware — cpe:2.3:o:fujixerox:apeosport_4570g_firmware:-:*:*:*:*:*:*:*
fujixerox apeosport_3560_firmware — cpe:2.3:o:fujixerox:apeosport_3560_firmware:-:*:*:*:*:*:*:*
fujixerox apeosport_3060_firmware — cpe:2.3:o:fujixerox:apeosport_3060_firmware:-:*:*:*:*:*:*:*
fujixerox apeosport_2560_firmware — cpe:2.3:o:fujixerox:apeosport_2560_firmware:-:*:*:*:*:*:*:*
fujixerox apeosport_3560g_firmware — cpe:2.3:o:fujixerox:apeosport_3560g_firmware:-:*:*:*:*:*:*:*
fujixerox apeosport_3060g_firmware — cpe:2.3:o:fujixerox:apeosport_3060g_firmware:-:*:*:*:*:*:*:*
fujixerox apeosport_2560g_firmware — cpe:2.3:o:fujixerox:apeosport_2560g_firmware:-:*:*:*:*:*:*:*
fujixerox apeosport-vii_5021_firmware — cpe:2.3:o:fujixerox:apeosport-vii_5021_firmware:-:*:*:*:*:*:*:*
fujixerox apeosport-vii_4021_firmware — cpe:2.3:o:fujixerox:apeosport-vii_4021_firmware:-:*:*:*:*:*:*:*
fujixerox apeosport-vii_p5021_firmware — cpe:2.3:o:fujixerox:apeosport-vii_p5021_firmware:-:*:*:*:*:*:*:*
fujixerox docuprint_cp_555_d_firmware — cpe:2.3:o:fujixerox:docuprint_cp_555_d_firmware:-:*:*:*:*:*:*:*
fujixerox docuprint_cp_505_d_firmware — cpe:2.3:o:fujixerox:docuprint_cp_505_d_firmware:-:*:*:*:*:*:*:*
fujixerox docuprint_p505_d_firmware — cpe:2.3:o:fujixerox:docuprint_p505_d_firmware:-:*:*:*:*:*:*:*
fujixerox primelink_c9065_firmware — cpe:2.3:o:fujixerox:primelink_c9065_firmware:-:*:*:*:*:*:*:*
fujixerox primelink_c9070_firmware — cpe:2.3:o:fujixerox:primelink_c9070_firmware:-:*:*:*:*:*:*:*
fujixerox docuprint_cp475ap_firmware — cpe:2.3:o:fujixerox:docuprint_cp475ap_firmware:-:*:*:*:*:*:*:*
fujixerox docuprint_p475ap_firmware — cpe:2.3:o:fujixerox:docuprint_p475ap_firmware:-:*:*:*:*:*:*:*

References for CVE-2021-20679

cvelogic Threat Intelligence