Jabber GuestApplication · Cisco
CVE-2017-6762
Official description Straight from the sourceThe vendor's or NVD's own wording, published unedited. Authoritative, but often terse — it says what broke, rarely what to do.
NVD · uneditedA vulnerability in the web-based management interface of Cisco Jabber Guest Server 10.6(9), 11.0(0), and 11.0(1) could allow an unauthenticated, remote attacker to conduct a cross-site scripting (XSS) attack against a user of the web-based management interface of the affected software. The vulnerability is due to insufficient validation of user-supplied input by the web-based management interface of the affected software. An attacker could exploit this vulnerability by persuading a user of the interface to click a crafted link. A successful exploit could allow the attacker to execute arbitrary script code in the context of the interface or allow the attacker to access sensitive browser-based information. Cisco Bug IDs: CSCve09718.
Technical summary Written by usOur analysis, written from the advisory, the CVSS vector and the affected-version data. It adds context the advisory leaves out, and never invents facts that are not in the source.
dbcve analysis · high confidenceA cross-site scripting (XSS) vulnerability in Cisco Jabber Guest Server versions 10.6(9), 11.0(0), and 11.0(1) allows unauthenticated remote attackers to inject malicious script via the web-based management interface due to insufficient input validation. The attack requires user interaction (clicking a crafted link) and can execute arbitrary code in the browser context or exfiltrate sensitive browser-based information.
Verify against the referenced sources before acting — the references below are authoritative for this CVE, this summary is not.
Affected products & versions What the vendor confirmedThe version ranges the vendor confirmed as vulnerable. If your version sits inside a range here, treat yourself as exposed until you have upgraded.
NVD · CPE data
Jabber GuestApplication
= 10.6.9= 10.6.10= 10.6.11= 10.6.12= 11.0.0CVSS breakdown How the score is builtThe industry scoring standard. It rates how the flaw is reached, what it takes to exploit, and what an attacker gains — the score is derived from those, not the other way round.
From the vector- Attack vector
- Network
- Complexity
- Low
- Privileges
- None
- User interaction
- Required
- Scope
- Changed
- Confidentiality
- Low
- Integrity
- Low
- Availability
- None
CVSS:3.0/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N
Am I affected? How to checkSteps we derive from the advisory and the affected-version data, so you can decide whether this CVE reaches your setup. They are a guide, not a scan — your own configuration is the authority.
dbcve checksWork through these to decide whether this CVE applies to you.
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Identify Cisco Jabber Guest installationLocate Cisco Jabber Guest Server on the system and retrieve the installed version number. Common locations include Program Files or system configuration directories.Affected if The installed version matches 10.6.9, 10.6.10, 10.6.11, 10.6.12, or 11.0.0.
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Verify web-based management interface statusCheck whether the web-based management interface is enabled in the Cisco Jabber Guest configuration. This is typically found in the admin console settings or service configuration files.Affected if The web-based management interface is enabled and accessible.
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Assess network exposure of management interfaceDetermine if the web management port (commonly HTTPS on port 8443 or similar) is exposed to untrusted networks or the internet. Review firewall rules and network ACLs controlling access to the management interface.Affected if The management interface is reachable from untrusted networks without authentication barriers.
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Review access logs for suspicious requestsExamine web server access logs for the management interface for unusual query patterns, especially those containing script tags or other XSS payloads in URL parameters.Affected if Logs contain requests with malicious script payloads in URL parameters that were not blocked.
You are affected if Cisco Jabber Guest version 10.6.9, 10.6.10, 10.6.11, 10.6.12, or 11.0.0 is installed AND the web-based management interface is enabled and accessible.
Generated from the published advisory. Verify against your own configuration.
Remediation Closing itWhat it takes to close this. Where a vendor fix exists we point at it; where none exists we say so plainly, and can build one. Effort estimates are scoped from the advisory, not from your codebase.
From vendor dataApply the vendor patch when available; until then, disable or restrict access to the web-based management interface and educate users about avoiding suspicious links.
Fix this in Jabber Guest
Scoped from the published advisory
- Consultation3.0 h
- Implementation6.0 h
- Testing3.0 h
- Review / QA2.0 h
An estimate, not a bill — we confirm scope with you before any work starts. Need it this week? Rush from $3,984.
Scan for this in your stack
Free · runs locallyCheck whether your project pulls in CVE-2017-6762 — or any other known-vulnerable package — straight from your lock files. Free and open source; it runs locally and uploads nothing.
References Go to the primary sourcePrimary sources — vendor advisories, patches and trackers. Where our summary and a reference disagree, the reference wins.
Primary sourcesPractitioner notes
ContributedPeer-ranked notes from engineers who’ve handled CVE-2017-6762 in production — separate from our analysis above.
The advisory tells you what broke. It rarely tells you what actually worked. If you’ve dealt with this one, that detail is what the next engineer is searching for.
- The version that genuinely resolved it — not the one the vendor claimed
- A config change or rule that shut the vector down
- A gotcha in the upgrade path that cost you an afternoon
No notes yet
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A place for practitioners to share what actually worked: a mitigation you’ve tested, a configuration change, a version- or environment-specific caveat, or a link to a verified patch. The most useful notes rise to the top as peers upvote them, so the signal stays high.
- Verified mitigations, workarounds, and config changes
- Version or environment caveats, and links to real fixes
- No weaponised exploit code, or anything meant to cause harm
- No spam, self-promotion, credentials, or personal data