How severe is CVE-2021-28668?

CVE-2021-28668 has a CVSS 3.x base score of 9.8, rated critical severity. It is exploitable over network with low attack complexity, requires no privileges and no user interaction. Impact on confidentiality is high, integrity high, and availability high.

Is CVE-2021-28668 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 1% (58th percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2021-28668?

CVE-2021-28668 primarily affects Xerox Altalink B8045 Firmware. In total, 10 product configurations (CPEs) are listed as vulnerable; see the affected-products list for the exact versions.

How do I fix CVE-2021-28668?

Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround. Given its critical severity, prioritise patching exposed systems.

When was CVE-2021-28668 published?

CVE-2021-28668 was published on 2021-03-29 and last updated on 2026-06-17.

CVE-2021-28668

CVE-2021-28668 is a critical-severity vulnerability in Xerox Altalink B8045 Firmware with a CVSS 3.x base score of 9.8. 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-89.

Key facts

Severity: Critical (CVSS 3.x base score 9.8)
CVSS v2: 7.5
EPSS exploit prediction: 1% (58th percentile)
Actively exploited: Not listed in CISA KEV
Weakness: CWE-89
Affected product: Xerox Altalink B8045 Firmware
Published: 2021-03-29
Last modified: 2026-06-17

Description

Xerox AltaLink B80xx before 103.008.020.23120, C8030/C8035 before 103.001.020.23120, C8045/C8055 before 103.002.020.23120 and C8070 before 103.003.020.23120 has several SQL injection vulnerabilities.

Frequently asked questions

What is CVE-2021-28668?: Xerox AltaLink B80xx before 103.008.020.23120, C8030/C8035 before 103.001.020.23120, C8045/C8055 before 103.002.020.23120 and C8070 before 103.003.020.23120 has several SQL injection vulnerabilities.
How severe is CVE-2021-28668?: CVE-2021-28668 has a CVSS 3.x base score of 9.8, rated critical severity. It is exploitable over network with low attack complexity, requires no privileges and no user interaction. Impact on confidentiality is high, integrity high, and availability high.
Is CVE-2021-28668 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 1% (58th percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2021-28668?: CVE-2021-28668 primarily affects Xerox Altalink B8045 Firmware. In total, 10 product configurations (CPEs) are listed as vulnerable; see the affected-products list for the exact versions.
How do I fix CVE-2021-28668?: Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround. Given its critical severity, prioritise patching exposed systems.
When was CVE-2021-28668 published?: CVE-2021-28668 was published on 2021-03-29 and last updated on 2026-06-17.

References

https://securitydocs.business.xerox.com/wp-content/uploads/2020/09/cert_Security_Mini_Bulletin_XRX20R_for_ALB80xx-C80xx-2.pdf

Affected products (10)

cpe:2.3:o:xerox:altalink_b8045_firmware:*:*:*:*:*:*:*:*
cpe:2.3:o:xerox:altalink_b8055_firmware:*:*:*:*:*:*:*:*
cpe:2.3:o:xerox:altalink_b8065_firmware:*:*:*:*:*:*:*:*
cpe:2.3:o:xerox:altalink_b8075_firmware:*:*:*:*:*:*:*:*
cpe:2.3:o:xerox:altalink_b8090_firmware:*:*:*:*:*:*:*:*
cpe:2.3:o:xerox:altalink_c8030_firmware:*:*:*:*:*:*:*:*
cpe:2.3:o:xerox:altalink_c8035_firmware:*:*:*:*:*:*:*:*
cpe:2.3:o:xerox:altalink_c8045_firmware:*:*:*:*:*:*:*:*
cpe:2.3:o:xerox:altalink_c8055_firmware:*:*:*:*:*:*:*:*
cpe:2.3:o:xerox:altalink_c8070_firmware:*:*:*:*:*:*:*:*

More vulnerabilities in Xerox Altalink B8045 Firmware

CVE-2019-10881 — Critical (CVSS 9.8): Xerox AltaLink B8045/B8055/B8065/B8075/B8090, AltaLink C8030/C8035/C8045/C8055/C8070 with software releases before…
CVE-2018-17172 — Critical (CVSS 9.8): The web application on Xerox AltaLink B80xx before 100.008.028.05200, C8030/C8035 before 100.001.028.05200, C8045/C8055…
CVE-2021-28670 — Critical (CVSS 9.1): Xerox AltaLink B8045/B8090 before 103.008.030.32000, C8030/C8035 before 103.001.030.32000, C8045/C8055 before…
CVE-2019-18629 — High (CVSS 8.1): Xerox AltaLink B8045/B8055/B8065/B8075/B8090 and C8030/C8035/C8045/C8055/C8070 multifunction printers with software…
CVE-2021-28669 — High (CVSS 7.5): Xerox AltaLink B80xx before 103.008.020.23120, C8030/C8035 before 103.001.020.23120, C8045/C8055 before…
CVE-2019-18630 — High (CVSS 7.5): On Xerox AltaLink B8045/B8055/B8065/B8075/B8090 and C8030/C8035/C8045/C8055/C8070 multifunction printers with software…

All CVEs affecting Xerox Altalink B8045 Firmware →

Other CWE-89 (SQL Injection) vulnerabilities

CVE-2026-54350 — Critical (CVSS 10.0): Budibase is an open-source low-code platform. Prior to 3.39.12, an unauthenticated visitor of any published Budibase…
CVE-2026-8054 — Critical (CVSS 10.0): Improper Neutralization of Special Elements used in an SQL Command ('SQL Injection') in the Publish Audit API endpoints…
CVE-2026-42287 — Critical (CVSS 10.0): Emlog is an open source website building system. Prior to version 2.6.11, direct SQL injection in article creation and…
CVE-2026-3325 — Critical (CVSS 10.0): SQL injection (SQLi) in MegaCMS v12.0.0, specifically in the “id_territorio” parameter of the…
CVE-2025-10878 — Critical (CVSS 10.0): A SQL injection vulnerability exists in the login functionality of Fikir Odalari AdminPando 1.0.1 before 2026-01-26.…
CVE-2025-57792 — Critical (CVSS 10.0): Explorance Blue versions prior to 8.14.9 contain a SQL injection vulnerability caused by insufficient validation of…

Browse all CWE-89 (SQL Injection) vulnerabilities →