vulntracker.iovulntracker.io
© 2026 vulntracker.io

CVE-2020-3495

Cisco Jabber for Windows Message Handling Arbitrary Code Execution Vulnerability

HIGH
8.8
CVSS Score
Published: September 4, 2020 at 02:25 AM UTC
Updated: June 17, 2026 at 03:18 AM UTC
1 product affected across 1 vendorJabber

Using Cisco Jabber by Cisco?

Get instant alerts when new vulnerabilities affect Cisco Jabber - before attackers find them.

Real-time alertsTrack your software stackFree plan available
Start FreeSign In
Severity
HIGH8.8
Exploit prediction
EPSS 61%
SSVC
No known exploit

Description

A vulnerability in Cisco Jabber for Windows could allow an authenticated, remote attacker to execute arbitrary code. The vulnerability is due to improper validation of message contents. An attacker could exploit this vulnerability by sending specially crafted Extensible Messaging and Presence Protocol (XMPP) messages to the affected software. A successful exploit could allow the attacker to cause the application to execute arbitrary programs on the targeted system with the privileges of the user account that is running the Cisco Jabber client software, possibly resulting in arbitrary code execution.

Affected

Our own answer: ranges merged, affected separated from platform-only, with confidence and review flags.

Jabber· Cisco
95%
12.1 ≤ v < 12.1.312.5 ≤ v < 12.5.212.6 ≤ v < 12.6.312.7 ≤ v < 12.7.212.8 ≤ v < 12.8.312.9 ≤ v < 12.9.1
Affected range stops below 12.1.3, so it looks safe — our inference, not a vendor statement
Affected range stops below 12.5.2, so it looks safe — our inference, not a vendor statement
Affected range stops below 12.6.3, so it looks safe — our inference, not a vendor statement
Affected range stops below 12.7.2, so it looks safe — our inference, not a vendor statement
Affected range stops below 12.8.3, so it looks safe — our inference, not a vendor statement
Affected range stops below 12.9.1, so it looks safe — our inference, not a vendor statement

Remediation

No guide yet

No remediation guidance has been written for this CVE yet. What the record does show:

Patch and advisory references

References (1)

Vendor Advisoryx_refsource_CISCO
Source: [email protected]
https://tools.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-jabber-UyTKCPGg

SSVC — Action Prioritization

SSVCNo known exploitNot automatableTotal impact

SSVC signals action urgency (what to patch first), separate from CVSS which measures severity.

CVSS

8.8HIGH[email protected]
Attack Vector
NETWORK
Complexity
LOW
Privileges
LOW
User Interaction
NONE
Scope
UNCHANGED
Confidentiality
HIGH
Integrity
HIGH
Availability
HIGH
Vector?

Quick Info

StatusMODIFIED
CWE
CWE-20

Get alerted

Stop reading CVE feeds looking for your own stack

Track the products you run and VulnTracker tells you when a new CVE affects them — with what is known about fixing it, and nothing about the rest.

Create accountSign in
Free plan, no card