What is the CVSS score of CVE-2018-15403?

CVE-2018-15403 has a CVSS 3.0 base score of 5.4 (Medium). CVSS vector: CVSS:3.0/AV:N/AC:L/PR:L/UI:R/S:C/C:L/I:L/A:N. EPSS exploitation probability: 1.2%.

Emergency Responder CVE-2018-15403

MEDIUM

URL Redirection to Untrusted Site (Open Redirect) (CWE-601)

2018-10-05 psirt@cisco.com

Open Redirect Cisco Unified Communications Manager Unified Communications Manager Im And Presence Service Unity Connection Emergency Responder

5.4

CVSS 3.0 · NVD

View

Vulnerability Assessment

Weakness	CWE CWE-601 OWASP Top 10:2025 A01:2025 - Broken Access Control ASVS 5.0 V3 - Web Frontend Security Redirect URL validation MITRE ATT&CK 1 technique across 1 tactic: Initial Access The technique list with ATT&CK links and the kill-chain view is part of the Basic plan and up. Sign in to read
Impact	CVSS score of 5.4 (MEDIUM). Attack characteristics: network attack vector, low complexity, low privileges required, user interaction required.
Exploit ScenarioDerived	A remote attacker could redirect users to malicious websites via URL manipulation by sending crafted requests to the affected application.

This Month Plan within 30 days. Why: MEDIUM severity (CVSS 4.0-6.9).

No patch listed yet 1.2% exploitation probability (EPSS)

Get an e-mail when this CVE is exploited, patched or re-scored. Free account.

Alert me

AnalysisAI

A vulnerability in the web interface of Cisco Emergency Responder, Cisco Unified Communications Manager, Cisco Unified Communications Manager IM & Presence Service, and Cisco Unity Connection could. Rated medium severity (CVSS 5.4), this vulnerability is remotely exploitable, low attack complexity. No vendor patch available.

RemediationAI

No vendor patch is available at time of analysis. Monitor vendor advisories for updates. Validate redirect destinations against an allowlist, avoid using user input in redirect URLs.

Affects your stack

Find out whether the stacks and servers you run are on an affected version.

Checking this CVE against your own stacks and servers is part of the Basic plan and up.

Technical ContextAI · show details

This vulnerability is classified as Open Redirect (CWE-601), which allows attackers to redirect users to malicious websites via URL manipulation. A vulnerability in the web interface of Cisco Emergency Responder, Cisco Unified Communications Manager, Cisco Unified Communications Manager IM & Presence Service, and Cisco Unity Connection could allow an authenticated, remote attacker to redirect a user to a malicious web page. The vulnerability is due to improper input validation of the parameters of an HTTP request. An attacker could exploit this vulnerability by crafting an HTTP request that causes the web interface to redirect a request to a specific malicious URL. This type of vulnerability is known as an open redirect attack and is used in phishing attacks that get users to unknowingly visit malicious sites. Affected products include: Cisco Unified Communications Manager, Cisco Unity Connection, Cisco Unified Communications Manager Im And Presence Service, Cisco Emergency Responder.

Know when Emergency Responder gets its next vulnerability

Watch products and get an email when something new is published
Check this CVE against your own stack and servers
Exploit and PoC references, threat intelligence from 22 sources

Continue with Google Continue with GitHub

No credit card · 7-day full trial

Severity by source

NVD PRIMARY 5.4 MEDIUM

AV:N/AC:L/PR:L/UI:R/S:C/C:L/I:L/A:N

Primary rating from NVD · only source for this CVE.

CVSS VectorNVD

Attack Vector

Network

Attack Complexity

Low

Privileges Required

Low

User Interaction

Required

Scope

Changed

Confidentiality

Low

Integrity

Low

Availability

None

DescriptionNVD

A vulnerability in the web interface of Cisco Emergency Responder, Cisco Unified Communications Manager, Cisco Unified Communications Manager IM & Presence Service, and Cisco Unity Connection could allow an authenticated, remote attacker to redirect a user to a malicious web page. The vulnerability is due to improper input validation of the parameters of an HTTP request. An attacker could exploit this vulnerability by crafting an HTTP request that causes the web interface to redirect a request to a specific malicious URL. This type of vulnerability is known as an open redirect attack and is used in phishing attacks that get users to unknowingly visit malicious sites.

Threat Intelligence Overview

EPSS Score

1.2%

Top 35% exploitable

Data Quality

2 sources

Confidence: Low

NVD

CVE.org

EPSS

How this decision was reached

The engine reads each signal below and applies a fixed list of rules from top to bottom. The first rule that matches sets the recommended action – like a statement, every line is shown.

SignalValue

Severity MEDIUM

CISA KEV No

Public POC No

EPSS 1.2%

Patch available No

Active threat No

Deciding rule

MEDIUM severity (CVSS 4.0-6.9)

What every action level means

Emergency Immediate action required. Criteria: CRITICAL + in CISA KEV (actively exploited) without patch, OR CRITICAL + EPSS > 30% without patch, OR CRITICAL + active threat signals without patch.

Act Now Prioritize within 24-48h. Criteria: in KEV with patch available, OR CRITICAL + public POC, OR HIGH + EPSS > 10%, OR CRITICAL + active threat, OR any CRITICAL severity.

This Week Schedule remediation this week. Criteria: HIGH severity (CVSS 7.0-8.9). Patch within normal change window.

This Month Plan within 30 days. Criteria: MEDIUM severity (CVSS 4.0-6.9), lower exploitation probability. Include in regular patch cycle.

Monitor Track and reassess. Criteria: LOW severity (CVSS 0.1-3.9), minimal exploitation risk. No immediate action needed.

SSVC AssessmentENISA

SSVC Decision· derived

Scheduled

Exploitation· derived

None

System Exposure· derived

Open

Automatable· derived

Human Impact· derived

Medium

Priority Score

Low Medium High Critical

KEV: 0

EPSS: +1

CVSS: +27

PoC: 0

Weaponized: 0

Threat intel: 0

Gov advisory: 0

Affected Products (CPE)NVD

cpe:2.3:a:cisco:unified_communications_manager:10.5\(2.10000.5\):*:*:*:*:*:*:*

cpe:2.3:a:cisco:unified_communications_manager:11.0\(1.10000.10\):*:*:*:*:*:*:*

cpe:2.3:a:cisco:unified_communications_manager:11.5\(1.10000.6\):*:*:*:*:*:*:*

cpe:2.3:a:cisco:unified_communications_manager:12.0\(1.10000.10\):*:*:*:*:*:*:*

cpe:2.3:a:cisco:unity_connection:9.1\(1\)es23:*:*:*:*:*:*:*

cpe:2.3:a:cisco:unified_communications_manager_im_and_presence_service:10.5\(1\):*:*:*:*:*:*:*

cpe:2.3:a:cisco:unified_communications_manager_im_and_presence_service:10.5\(2\):*:*:*:*:*:*:*

cpe:2.3:a:cisco:unified_communications_manager_im_and_presence_service:12.0\(1\):*:*:*:*:*:*:*

cpe:2.3:a:cisco:unified_communications_manager_im_and_presence_service:12.5\(1\):*:*:*:*:*:*:*

cpe:2.3:a:cisco:emergency_responder:11.5\(4.59000.1\):*:*:*:*:*:*:*

cpe:2.3:a:cisco:emergency_responder:12.0\(1.40000.3\):*:*:*:*:*:*:*

cpe:2.3:a:cisco:emergency_responder:12.5\(0.98000.110\):*:*:*:*:*:*:*

More in Emergency Responder

View all

CVE-2021-44228 CRITICAL Act Now POC

10.0 Dec 10

Apache Log4j2 contains a critical JNDI injection vulnerability known as 'Log4Shell' that allows unauthenticated remote c

CVE-2017-12337 CRITICAL Act Now

9.8 Nov 16

A vulnerability in the upgrade mechanism of Cisco collaboration products based on the Cisco Voice Operating System softw

CVE-2023-20101 CRITICAL Act Now

9.8 Oct 04

A vulnerability in Cisco Emergency Responder could allow an unauthenticated, remote attacker to log in to an affected de

CVE-2016-6468 HIGH This Week

8.8 Dec 14

A vulnerability in the web-based management interface of Cisco Emergency Responder could allow an unauthenticated, remot

CVE-2024-20352 HIGH This Week

8.8 Apr 03

A vulnerability in Cisco Emergency Responder could allow an authenticated, remote attacker to conduct a directory traver

CVE-2023-20259 HIGH This Week

7.5 Oct 04

A vulnerability in an API endpoint of multiple Cisco Unified Communications Products could allow an unauthenticated, rem

CVE-2023-20266 HIGH This Week

7.2 Aug 30

A vulnerability in Cisco Emergency Responder, Cisco Unified Communications Manager (Unified CM), Cisco Unified Communica

CVE-2014-2115 MEDIUM This Month

6.8 Apr 04

Multiple cross-site request forgery (CSRF) vulnerabilities in CERUserServlet pages in Cisco Emergency Responder (ER) 8.6

CVE-2015-6405 MEDIUM This Month

6.8 Dec 13

Cross-site request forgery (CSRF) vulnerability in Cisco Emergency Responder 10.5(1) and 10.5(1a) allows remote attacker

CVE-2016-9208 MEDIUM This Month

6.5 Dec 14

A vulnerability in the File Management Utility, the Download File form, and the Serviceability application of Cisco Emer

CVE-2024-20347 MEDIUM This Month

6.5 Apr 03

A vulnerability in Cisco Emergency Responder could allow an unauthenticated, remote attacker to conduct a CSRF attack, w

CVE-2021-1226 MEDIUM This Month

6.5 Jan 13

A vulnerability in the audit logging component of Cisco Unified Communications Manager, Cisco Unified Communications Man

Same weakness CWE-601 – URL Redirection to Untrusted Site (Open Redirect)

View all

CVE-2017-1000117 HIGH POC

8.8

CVE-2016-5385 HIGH POC

8.1

CVE-2018-11784 MEDIUM POC

4.3

CVE-2017-3528 MEDIUM POC

5.4

CVE-2012-0518 MEDIUM

4.7

CVE-2024-21641 MEDIUM POC

6.5

CVE-2015-5354 MEDIUM POC

5.8

CVE-2024-22891 CRITICAL POC

9.8

References

Advisories & patches

ADVISORY https://tools.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-20181003-er-ucm-redirect REF http://www.securitytracker.com/id/1041780 REF http://www.securitytracker.com/id/1041789

Search Externally

GitHub PoC

Exploit-DB PacketStorm Snyk Rapid7 Nuclei Templates Trickest PoC

Back