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CVE-2020-27133

31
FAUCET Score

CVE-2020-27133 describes multiple critical vulnerabilities in Cisco Jabber for Windows, MacOS, and mobile platforms. These flaws could allow an authenticated attacker to execute arbitrary code with elevated privileges or access sensitive information on the underlying operating system. With a CVSS score of 9.9 (CRITICAL) and a FAUCET Risk Score of 93/100, this vulnerability presents a significant threat due to its network-based attack vector, low attack complexity, and high impact on confidentiality, integrity, and availability. While there is no known active exploitation or public exploit code (Metasploit, Nuclei, ExploitDB), the vulnerability has garnered substantial community discussion and media coverage, indicating high awareness.

Impacted Technologies

VendorProductVersion(s)CPE
12.9\(0\)CPE matchmatch criteria
cpe:2.3:a:cisco:jabber:12.9\(0\):*:*:*:*:macos:*:*
12.9\(0\)CPE matchmatch criteria
cpe:2.3:a:cisco:jabber:12.9\(0\):*:*:*:*:windows:*:*
12.9\(1\)CPE matchmatch criteria
cpe:2.3:a:cisco:jabber:12.9\(1\):*:*:*:*:macos:*:*
12.9\(1\)CPE matchmatch criteria
cpe:2.3:a:cisco:jabber:12.9\(1\):*:*:*:*:windows:*:*
12.9\(2\)CPE matchmatch criteria
cpe:2.3:a:cisco:jabber:12.9\(2\):*:*:*:*:macos:*:*

CVSS Data

CVSS version used by this source: 3.1

9.9CRITICAL

CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:H/I:H/A:H

Attack Vector
NETWORK
Attack Complexity
LOW
Privileges Required
LOW
User Interaction
NONE
Scope
CHANGED
Confidentiality Impact
HIGH
Integrity Impact
HIGH
Availability Impact
HIGH
Exploitability Score
3.1
Impact Score
6.0
CvssVersion
3.1

Exploit Intelligence

EPSS Score
1.12%
Probability of exploitation in next 30 days
EPSS Percentile
62.9%
Percentile rank of EPSS score among Peer Group
As of 2026-07-27
Model: v2026.06.15
This CVE's current EPSS score of 0.0112 is in the 69th percentile among its peer group of 1,124 CVEs.

Social Chatter

The average CVE in this peer group has 0.0 Twitter, 0.1 Reddit, 1.0 Bluesky, 0.5 Mastodon, and 1.6 GitHub mentions.

Media Mentions

The average CVE in this peer group has 0.3 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-jabber-ZktzjpgO
Vendor Advisory