How severe is CVE-2018-18959?

CVE-2018-18959 has a CVSS 3.x base score of 7.5, rated high severity. It is exploitable over network with low attack complexity, requires no privileges and no user interaction. Impact on confidentiality is none, integrity none, and availability high.

Is CVE-2018-18959 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 1% (63rd percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2018-18959?

CVE-2018-18959 primarily affects Epson Epson Workforce Wf-2861 Firmware. In total, 3 product configurations (CPEs) are listed as vulnerable; see the affected-products list for the exact versions.

How do I fix CVE-2018-18959?

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

When was CVE-2018-18959 published?

CVE-2018-18959 was published on 2018-12-24 and last updated on 2026-06-17.

CVE-2018-18959

CVE-2018-18959 is a high-severity vulnerability in Epson Epson Workforce Wf-2861 Firmware with a CVSS 3.x base score of 7.5. 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-119.

Key facts

Severity: High (CVSS 3.x base score 7.5)
CVSS v2: 5.0
EPSS exploit prediction: 1% (63rd percentile)
Actively exploited: Not listed in CISA KEV
Weakness: CWE-119
Affected product: Epson Epson Workforce Wf-2861 Firmware
Published: 2018-12-24
Last modified: 2026-06-17

Description

An issue was discovered on Epson WorkForce WF-2861 10.48 LQ22I3, 10.51.LQ20I6 and 10.52.LQ17IA devices. On the 'Air Print Setting' web page, if the data for 'Bonjour Service Location' at /PRESENTATION/BONJOUR is more than 251 bytes when sending data for Air Print Setting, then the device no longer functions until a reboot.

Frequently asked questions

What is CVE-2018-18959?: An issue was discovered on Epson WorkForce WF-2861 10.48 LQ22I3, 10.51.LQ20I6 and 10.52.LQ17IA devices. On the 'Air Print Setting' web page, if the data for 'Bonjour Service Location' at /PRESENTATION/BONJOUR is more than 251 bytes when sending data for Air Print Setting, then the device no longer functions until a reboot.
How severe is CVE-2018-18959?: CVE-2018-18959 has a CVSS 3.x base score of 7.5, rated high severity. It is exploitable over network with low attack complexity, requires no privileges and no user interaction. Impact on confidentiality is none, integrity none, and availability high.
Is CVE-2018-18959 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 1% (63rd percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2018-18959?: CVE-2018-18959 primarily affects Epson Epson Workforce Wf-2861 Firmware. In total, 3 product configurations (CPEs) are listed as vulnerable; see the affected-products list for the exact versions.
How do I fix CVE-2018-18959?: Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround. Given its high severity, prioritise patching exposed systems.
When was CVE-2018-18959 published?: CVE-2018-18959 was published on 2018-12-24 and last updated on 2026-06-17.

References

https://github.com/epistemophilia/CVEs/blob/master/Epson-WorkForce-WF2861/CVE-2018-18959/poc-cve-2018-18959.py

Affected products (3)

cpe:2.3:o:epson:epson_workforce_wf-2861_firmware:10.48_lq22i3:*:*:*:*:*:*:*
cpe:2.3:o:epson:epson_workforce_wf-2861_firmware:10.51.lq20i6:*:*:*:*:*:*:*
cpe:2.3:o:epson:epson_workforce_wf-2861_firmware:10.52.lq17ia:*:*:*:*:*:*:*

More vulnerabilities in Epson Epson Workforce Wf-2861 Firmware

CVE-2018-19248 — Critical (CVSS 9.1): The web service on Epson WorkForce WF-2861 10.48 LQ22I3(Recovery-mode), WF-2861 10.51.LQ20I6, and WF-2861 10.52.LQ17IA…
CVE-2018-19232 — High (CVSS 7.5): The web service on Epson WorkForce WF-2861 10.48 LQ22I3(Recovery-mode), WF-2861 10.51.LQ20I6, and WF-2861 10.52.LQ17IA…
CVE-2018-18960 — Medium (CVSS 5.9): An issue was discovered on Epson WorkForce WF-2861 10.48 LQ22I3, 10.51.LQ20I6 and 10.52.LQ17IA devices. They use SNMP…

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