How severe is CVE-2015-1778?

CVE-2015-1778 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-2015-1778 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 2% (81st percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2015-1778?

CVE-2015-1778 affects Opendaylight. See the affected-products list for the exact vulnerable versions.

How do I fix CVE-2015-1778?

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-2015-1778 published?

CVE-2015-1778 was published on 2017-06-27 and last updated on 2026-06-17.

CVE-2015-1778

CVE-2015-1778 is a critical-severity vulnerability in Opendaylight 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-287.

Key facts

Severity: Critical (CVSS 3.x base score 9.8)
CVSS v2: 7.5
EPSS exploit prediction: 2% (81st percentile)
Actively exploited: Not listed in CISA KEV
Weakness: CWE-287
Affected product: Opendaylight
Published: 2017-06-27
Last modified: 2026-06-17

Description

The custom authentication realm used by karaf-tomcat's "opendaylight" realm in Opendaylight before Helium SR3 will authenticate any username and password combination.

Frequently asked questions

What is CVE-2015-1778?: The custom authentication realm used by karaf-tomcat's "opendaylight" realm in Opendaylight before Helium SR3 will authenticate any username and password combination.
How severe is CVE-2015-1778?: CVE-2015-1778 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-2015-1778 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 2% (81st percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2015-1778?: CVE-2015-1778 affects Opendaylight. See the affected-products list for the exact vulnerable versions.
How do I fix CVE-2015-1778?: 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-2015-1778 published?: CVE-2015-1778 was published on 2017-06-27 and last updated on 2026-06-17.

References

Affected products (1)

cpe:2.3:a:opendaylight:opendaylight:-:*:*:*:*:*:*:*

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