CVE-2018-15393

CVE-2018-15393 is a medium-severity vulnerability in Cisco Content Security Management Appliance with a CVSS 3.x base score of 4.8. 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-79.

Key facts

• Severity: Medium (CVSS 3.x base score 4.8)
• CVSS v2: 4.3
• EPSS exploit prediction: 1% (65th percentile)
• Actively exploited: Not listed in CISA KEV
• Weakness: CWE-79
• Affected product: Cisco Content Security Management Appliance
• Published: 2018-11-08
• Last modified: 2026-06-17

Description

A vulnerability in the web-based management interface of Cisco Content Security Management Appliance (SMA) Software could allow an unauthenticated, remote attacker to conduct a cross-site scripting (XSS) attack against a user of the web-based management interface. The vulnerability is due to insufficient validation of user-supplied input by the web-based management interface of an affected device. An attacker could exploit this vulnerability by persuading a user of the interface to click a maliciously crafted link. A successful exploit could allow the attacker to execute arbitrary script code in the context of the affected interface or access sensitive, browser-based information.

Frequently asked questions

What is CVE-2018-15393?

A vulnerability in the web-based management interface of Cisco Content Security Management Appliance (SMA) Software could allow an unauthenticated, remote attacker to conduct a cross-site scripting (XSS) attack against a user of the web-based management interface. The vulnerability is due to insufficient validation of user-supplied input by the web-based management interface of an affected device. An attacker could exploit this vulnerability by persuading a user of the interface to click a maliciously crafted link. A successful exploit could allow the attacker to execute arbitrary script code in the context of the affected interface or access sensitive, browser-based information.

How severe is CVE-2018-15393?

CVE-2018-15393 has a CVSS 3.x base score of 4.8, rated medium severity. It is exploitable over network with low attack complexity, requires high privileges and user interaction. Impact on confidentiality is low, integrity low, and availability none.

Is CVE-2018-15393 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 1% (65th percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2018-15393?

CVE-2018-15393 affects Cisco Content Security Management Appliance. See the affected-products list for the exact vulnerable versions.

How do I fix CVE-2018-15393?

Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround.

When was CVE-2018-15393 published?

CVE-2018-15393 was published on 2018-11-08 and last updated on 2026-06-17.

References

• http://www.securityfocus.com/bid/105858
• https://tools.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-20181107-sma-xss

Affected products (1)

• cpe:2.3:a:cisco:content_security_management_appliance:-:*:*:*:*:*:*:*

More vulnerabilities in Cisco Content Security Management Appliance

• CVE-2014-2119 — High (CVSS 8.5): The End User Safelist/Blocklist (aka SLBL) service in Cisco AsyncOS Software for Email Security Appliance (ESA) before…
• CVE-2015-6321 — High (CVSS 7.8): Cisco AsyncOS before 8.5.7-042, 9.x before 9.1.0-032, 9.1.x before 9.1.1-023, and 9.5.x and 9.6.x before 9.6.0-042 on…
• CVE-2013-5537 — High (CVSS 7.8): The web framework on Cisco Web Security Appliance (WSA), Email Security Appliance (ESA), and Content Security…
• CVE-2016-2183 — High (CVSS 7.5): The DES and Triple DES ciphers, as used in the TLS, SSH, and IPSec protocols and other protocols and products, have a…
• CVE-2013-3395 — Medium (CVSS 6.8): Cross-site request forgery (CSRF) vulnerability in the web framework on Cisco IronPort Web Security Appliance (WSA)…
• CVE-2021-1447 — Medium (CVSS 6.7): A vulnerability in the user account management system of Cisco AsyncOS for Cisco Content Security Management Appliance…

All CVEs affecting Cisco Content Security Management Appliance →

Other CWE-79 (Cross-site Scripting (XSS)) vulnerabilities

• CVE-2025-49410 — Critical (CVSS 10.0): Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting') vulnerability in Imran Emu TC…
• CVE-2024-47875 — Critical (CVSS 10.0): DOMPurify is a DOM-only, super-fast, uber-tolerant XSS sanitizer for HTML, MathML and SVG. DOMpurify was vulnerable to…
• CVE-2024-6886 — Critical (CVSS 10.0): Improper Neutralization of Input During Web Page Generation (XSS or 'Cross-site Scripting') vulnerability in Gitea…
• CVE-2023-45144 — Critical (CVSS 10.0): com.xwiki.identity-oauth:identity-oauth-ui is a package to aid in building identity and service providers based on…
• CVE-2023-45138 — Critical (CVSS 10.0): Change Request is an pplication allowing users to request changes on a wiki without publishing the changes directly.…
• CVE-2022-4361 — Critical (CVSS 10.0): Keycloak, an open-source identity and access management solution, has a cross-site scripting (XSS) vulnerability in the…

Browse all CWE-79 (Cross-site Scripting (XSS)) vulnerabilities →