Is CVE-2015-2055 being actively exploited?

CVE-2015-2055 is not currently listed in the CISA Known Exploited Vulnerabilities (KEV) catalog.

What is the CVSS score for CVE-2015-2055?

CVE-2015-2055 has a CVSS 2.0 base score of 7.8 (HIGH).

CVE-2015-2055

HIGH · CVSS 7.8EPSS 3.0%EU EUVD

Zhone GPON 2520 with firmware R4.0.2.566b allows remote attackers to cause a denial of service via a long string in the oldpassword parameter.

Key facts

CVSS score: 7.8 (v2.0)
Severity: HIGH
CVSS vector: AV:N/AC:L/Au:N/C:N/I:N/A:C
Weakness (CWE): CWE-20
EPSS score: 3.0% (88th percentile)
In CISA KEV: No
In EU EUVD: Yes (EUVD-2015-2168)
Published: February 23, 2015
NVD last modified: June 17, 2026
Status: Modified

EU Vulnerability Database (EUVD)

This vulnerability is also tracked by ENISA as EUVD-2015-2168 in the EU Vulnerability Database. Last updated in EUVD on August 6, 2024.

View on the EU Vulnerability Database

Affected products

zhone technologies / gpon 2520
zhone technologies / gpon 2520 firmware

References

Last updated September 17, 2026 · Source: NVD, CISA KEV, FIRST.org EPSS

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