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CVE-2018-15436

21
FAUCET Score

CVE-2018-15436 is a cross-site scripting (XSS) vulnerability affecting the web-based management interfaces of Cisco Webex Events, Meeting, Support, and Training Centers, as well as Webex Business Suite and Meetings Online. The vulnerability stems from insufficient input validation, allowing an unauthenticated, remote attacker to execute arbitrary script code or access sensitive browser-based information by tricking a user into clicking a malicious link. Rated Medium (CVSS 6.1), it requires user interaction and has low impact on confidentiality and integrity. There is no evidence of active exploitation, public exploit code, or significant community discussion, and it is not listed in CISA's KEV catalog.

Impacted Technologies

VendorProductVersion(s)CPE
>= 31.29.2CPE matchmatch criteria
cpe:2.3:a:cisco:webex_business_suite_31:*:*:*:*:*:*:*:*
>= 32.17.2CPE matchmatch criteria
cpe:2.3:a:cisco:webex_business_suite_32:*:*:*:*:*:*:*:*
>= 33.4.3CPE matchmatch criteria
cpe:2.3:a:cisco:webex_business_suite_33:*:*:*:*:*:*:*:*
t33.4.0CPE matchmatch criteria
cpe:2.3:a:cisco:webex_meetings_online:t33.4.0:*:*:*:*:*:*:*

CVSS Data

CVSS version used by this source: 3.0

6.1MEDIUM

CVSS:3.0/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N

Attack Vector
NETWORK
Attack Complexity
LOW
Privileges Required
NONE
User Interaction
REQUIRED
Scope
CHANGED
Confidentiality Impact
LOW
Integrity Impact
LOW
Availability Impact
NONE
Exploitability Score
2.8
Impact Score
2.7
CvssVersion
3.0

Exploit Intelligence

EPSS Score
1.37%
Probability of exploitation in next 30 days
EPSS Percentile
69.1%
Percentile rank of EPSS score among Peer Group
As of 2026-07-27
Model: v2026.06.15
This CVE's current EPSS score of 0.0137 is in the 81st percentile among its peer group of 26,234 CVEs.

Social Chatter

The average CVE in this peer group has 0.0 Twitter, 0.0 Reddit, 0.1 Bluesky, 0.0 Mastodon, and 0.1 GitHub mentions.

Media Mentions

No media coverage found for this CVE.

The average CVE in this peer group has 0.1 InfoSec Media, 0.0 Vendor Blog, and 0.0 Security Researcher mentions.

Remediation

Vendor Patches (1)

ciscovendor investigatingvia nvd_reference
View patch

References

tools.cisco.com / security/center/content/CiscoSecurityAdvisory/cisco-sa-20181003-webex-xss
Vendor Advisory
securityfocus.com / bid/105557
Third Party AdvisoryVDB Entry
securitytracker.com / id/1041793
Third Party AdvisoryVDB Entry
securitytracker.com / id/1041794
Third Party AdvisoryVDB Entry