How severe is CVE-2018-15448?

CVE-2018-15448 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 high, integrity none, and availability none.

Is CVE-2018-15448 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-2018-15448?

CVE-2018-15448 affects Cisco Registered Envelope Service. See the affected-products list for the exact vulnerable versions.

How do I fix CVE-2018-15448?

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-2018-15448 published?

CVE-2018-15448 was published on 2018-11-08 and last updated on 2026-06-17.

CVE-2018-15448

CVE-2018-15448 is a high-severity vulnerability in Cisco Registered Envelope Service 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-16.

Key facts

Severity: High (CVSS 3.x base score 7.5)
CVSS v2: 5.0
EPSS exploit prediction: 2% (81st percentile)
Actively exploited: Not listed in CISA KEV
Weakness: CWE-16
Affected product: Cisco Registered Envelope Service
Published: 2018-11-08
Last modified: 2026-06-17

Description

A vulnerability in the user management functions of Cisco Registered Envelope Service could allow an unauthenticated, remote attacker to discover sensitive user information. The attacker could use this information to conduct additional reconnaissance attacks. The vulnerability is due to an insecure configuration that allows improper indexing. An attacker could exploit this vulnerability by using a search engine to look for specific data strings. A successful exploit could allow the attacker to discover certain sensitive information about the application, including usernames.

Frequently asked questions

What is CVE-2018-15448?: A vulnerability in the user management functions of Cisco Registered Envelope Service could allow an unauthenticated, remote attacker to discover sensitive user information. The attacker could use this information to conduct additional reconnaissance attacks. The vulnerability is due to an insecure configuration that allows improper indexing. An attacker could exploit this vulnerability by using a search engine to look for specific data strings. A successful exploit could allow the attacker to discover certain sensitive information about the application, including usernames.
How severe is CVE-2018-15448?: CVE-2018-15448 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 high, integrity none, and availability none.
Is CVE-2018-15448 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-2018-15448?: CVE-2018-15448 affects Cisco Registered Envelope Service. See the affected-products list for the exact vulnerable versions.
How do I fix CVE-2018-15448?: 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-2018-15448 published?: CVE-2018-15448 was published on 2018-11-08 and last updated on 2026-06-17.

References

Affected products (1)

cpe:2.3:a:cisco:registered_envelope_service:-:*:*:*:*:*:*:*

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