CVE-2018-20768
CVE-2018-20768 is a critical-severity vulnerability in Xerox Workcentre 3655i 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-94.
Key facts
- Severity: Critical (CVSS 3.x base score 9.8)
- CVSS v2: 7.5
- EPSS exploit prediction: 1% (64th percentile)
- Actively exploited: Not listed in CISA KEV
- Weakness: CWE-94
- Affected product: Xerox Workcentre 3655i Firmware
- Published:
- Last modified:
Description
An issue was discovered on Xerox WorkCentre 3655, 3655i, 58XX, 58XXi, 59XX, 59XXi, 6655, 6655i, 72XX, 72XXi, 78XX, 78XXi, 7970, 7970i, EC7836, and EC7856 devices before R18-05 073.xxx.0487.15000. An attacker can execute PHP code by leveraging a writable file.
Frequently asked questions
- What is CVE-2018-20768?
- An issue was discovered on Xerox WorkCentre 3655, 3655i, 58XX, 58XXi, 59XX, 59XXi, 6655, 6655i, 72XX, 72XXi, 78XX, 78XXi, 7970, 7970i, EC7836, and EC7856 devices before R18-05 073.xxx.0487.15000. An attacker can execute PHP code by leveraging a writable file.
- How severe is CVE-2018-20768?
- CVE-2018-20768 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-2018-20768 being actively exploited?
- It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 1% (64th percentile), an estimate of the probability of exploitation in the next 30 days.
- What products are affected by CVE-2018-20768?
- CVE-2018-20768 primarily affects Xerox Workcentre 3655i Firmware. In total, 29 product configurations (CPEs) are listed as vulnerable; see the affected-products list for the exact versions.
- How do I fix CVE-2018-20768?
- 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-2018-20768 published?
- CVE-2018-20768 was published on 2019-02-10 and last updated on 2026-06-17.
References
Affected products (29)
- cpe:2.3:o:xerox:workcentre_3655i_firmware:*:*:*:*:*:*:*:*
- cpe:2.3:o:xerox:workcentre_3655_firmware:*:*:*:*:*:*:*:*
- cpe:2.3:o:xerox:workcentre_5890i_firmware:*:*:*:*:*:*:*:*
- cpe:2.3:o:xerox:workcentre_5865i_firmware:*:*:*:*:*:*:*:*
- cpe:2.3:o:xerox:workcentre_5875i_firmware:*:*:*:*:*:*:*:*
- cpe:2.3:o:xerox:workcentre_5845_firmware:*:*:*:*:*:*:*:*
- cpe:2.3:o:xerox:workcentre_5865_firmware:*:*:*:*:*:*:*:*
- cpe:2.3:o:xerox:workcentre_5875_firmware:*:*:*:*:*:*:*:*
- cpe:2.3:o:xerox:workcentre_5890_firmware:*:*:*:*:*:*:*:*
- cpe:2.3:o:xerox:workcentre_5900_firmware:*:*:*:*:*:*:*:*
- cpe:2.3:o:xerox:workcentre_5900i_firmware:*:*:*:*:*:*:*:*
- cpe:2.3:o:xerox:workcentre_6655_firmware:*:*:*:*:*:*:*:*
- cpe:2.3:o:xerox:workcentre_6655i_firmware:*:*:*:*:*:*:*:*
- cpe:2.3:o:xerox:workcentre_7855_firmware:*:*:*:*:*:*:*:*
- cpe:2.3:o:xerox:workcentre_7225_firmware:*:*:*:*:*:*:*:*
- cpe:2.3:o:xerox:workcentre_7220_firmware:*:*:*:*:*:*:*:*
- cpe:2.3:o:xerox:workcentre_7220i_firmware:*:*:*:*:*:*:*:*
- cpe:2.3:o:xerox:workcentre_7225i_firmware:*:*:*:*:*:*:*:*
- cpe:2.3:o:xerox:workcentre_7855i_firmware:*:*:*:*:*:*:*:*
- cpe:2.3:o:xerox:workcentre_7845i_firmware:*:*:*:*:*:*:*:*
- cpe:2.3:o:xerox:workcentre_7835i_firmware:*:*:*:*:*:*:*:*
- cpe:2.3:o:xerox:workcentre_7830i_firmware:*:*:*:*:*:*:*:*
- cpe:2.3:o:xerox:workcentre_7830_firmware:*:*:*:*:*:*:*:*
- cpe:2.3:o:xerox:workcentre_7835_firmware:*:*:*:*:*:*:*:*
- cpe:2.3:o:xerox:workcentre_7845_firmware:*:*:*:*:*:*:*:*
- cpe:2.3:o:xerox:workcentre_7970_firmware:*:*:*:*:*:*:*:*
- cpe:2.3:o:xerox:workcentre_7970i_firmware:*:*:*:*:*:*:*:*
- cpe:2.3:o:xerox:workcentre_ec7836_firmware:*:*:*:*:*:*:*:*
- cpe:2.3:o:xerox:workcentre_ec7856_firmware:*:*:*:*:*:*:*:*
More vulnerabilities in Xerox Workcentre 3655i Firmware
- CVE-2016-11061 — Critical (CVSS 9.8): Xerox WorkCentre 3655, 3655i, 58XX, 58XXi, 59XX, 59XXi, 6655, 6655i, 72XX, 72XXi, 78XX, 78XXi, 7970, and 7970i devices…
- CVE-2018-20771 — Critical (CVSS 9.8): An issue was discovered on Xerox WorkCentre 3655, 3655i, 58XX, 58XXi, 59XX, 59XXi, 6655, 6655i, 72XX, 72XXi, 78XX,…
- CVE-2018-20770 — Critical (CVSS 9.8): An issue was discovered on Xerox WorkCentre 3655, 3655i, 58XX, 58XXi, 59XX, 59XXi, 6655, 6655i, 72XX, 72XXi, 78XX,…
- CVE-2020-9330 — High (CVSS 8.8): Certain Xerox WorkCentre printers before 073.xxx.000.02300 do not require the user to reenter or validate LDAP bind…
- CVE-2018-20767 — High (CVSS 8.8): An issue was discovered on Xerox WorkCentre 3655, 3655i, 58XX, 58XXi, 59XX, 59XXi, 6655, 6655i, 72XX, 72XXi, 78XX,…
- CVE-2020-36201 — High (CVSS 7.5): An issue was discovered in certain Xerox WorkCentre products. They do not properly encrypt passwords. This affects…
All CVEs affecting Xerox Workcentre 3655i Firmware →
Other CWE-94 (Code Injection) vulnerabilities
- CVE-2026-76605 — Critical (CVSS 10.0): Joomla Extension - fabrikar.com - Remote code execution via image element in Fabrik < 4.7.2.
- CVE-2026-76604 — Critical (CVSS 10.0): Joomla Extension - fabrikar.com - Unauthenticated remote code execution via PHP form element in Fabrik < 4.7.2 - The…
- CVE-2026-67364 — Critical (CVSS 10.0): Joomla Extension - balbooa.com - Pre-auth PHP Code Injection in Balbooa Forms < 2.4.3.2 - CWE-94 / CWE-95 | CVSS 3.1:…
- CVE-2026-73343 — Critical (CVSS 10.0): Unauthenticated Remote Code Execution (RCE) in WP Compress < 7.20.01 versions.
- CVE-2026-74253 — Critical (CVSS 10.0): Joomla Extension - regularlabs.com - Unauthenticated RCE through unverified reflected user input in Sourcerer < 14.0.0…
- CVE-2026-73678 — Critical (CVSS 10.0): MindsDB Minds Platform version 26.1.0 and earlier contains an unauthenticated remote code execution vulnerability that…