CVE intelligence and bounded remediation

CVE-2020-27134 — Cisco Jabber security vulnerability

Critical CVSS 9.9

Multiple vulnerabilities in Cisco Jabber for Windows, Jabber for MacOS, and Jabber for mobile platforms could allow an attacker to execute arbitrary programs on the underlying operating system (OS) with elevated privileges or gain access to sensitive information. For more information about these vulnerabilities, see the Details section of this advisory.

Severity
Critical
CVSS
9.9 (3.1)
Published
2020-12-11
CISA KEV
Not currently listed
Ecosystem
windows/system
Weaknesses
CWE-201, CWE-200

Affected products

  • cisco / jabber / 12.9(0)
  • cisco / jabber / 12.9(1)
  • cisco / jabber / 12.9(2)
  • cisco / jabber / 12.9(3)
  • cisco / jabber_for_mobile_platforms / 12.9(0)
  • cisco / jabber_for_mobile_platforms / 12.9(1)

Showing 6 representative product identities from 12 source matches. Confirm exact affected versions with the linked vendor and NVD evidence.

Matched remediation archetype

Information disclosure and sensitive data exposure

This catalog composition supplies bounded fallback guidance. Explicitly reviewed curated workflows load with the complete record below.

Check exposure

  • Trace sensitive data through responses, errors, logs, metrics, traces, caches, exports, files, backups, and client bundles.
  • Identify affected subjects, tenants, retention windows, access controls, and downstream copies without opening unnecessary sensitive records.
  • Review metadata, timing, status, length, and existence signals as well as direct content disclosure.

Remediate safely

  • Minimize collection and output, apply field-level authorization and redaction at a centralized boundary, and return generic external errors.
  • Remove secrets and sensitive data from logs, artifacts, URLs, caches, and client-side bundles; rotate credentials that may have been exposed.
  • Update the affected component and add synthetic-data tests for response, error, observability, and export paths.

Authoritative sources

Complete CVE record and remediation plan

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