CVE-2020-27127

highpriority · track · 40EPSS 0.014 · 71 %ileEURUUS

grimoire priorityP2 · Scheduled

Exploitable?

—

no known exploitation

Likely / severe?

1.35% (71st) EPSS

CVSS 9 · high

Is it mine?

16 products

Check your exposure

Who says so?

5 sources

cnnvd · enisa_euvd · fstec_bdu · cisco_csaf

EPSS · scored 2026-10-27

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.

remediations

Vendor fix, mitigation, or workaround guidance, as published by each source.

A vendor fix is available.

FixedCisco Jabbercisco_csaf
Cisco has released software updates that address this vulnerability.
https://software.cisco.com

cvss

Technical severity, 0–10. One row per scoring source.

9.9

010

base score 0–10 · higher = more severe · hover a vector to decode⚠ sources disagree · high–critical · 8–9.9

v2.09highAV:N/AC:L/Au:S/C:C/I:C/A:Cprimary · NVD / NIST USexploitability 8 · impact 10

v3.19.9criticalCVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:H/I:H/A:Hprimary · NVD / NIST USexploitability 3.1 · impact 6

v3.18highAV:N/AC:L/PR:L/UI:R/S:U/C:H/I:H/A:Hsecondary · FSTEC (BDU) RU

v3.19.9criticalCVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:H/I:H/A:Hsecondary · ENISA EU

v3.19.9criticalCVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:H/I:H/A:Hsecondary · psirt@cisco.com USexploitability 3.1 · impact 6

v3.19.1criticalCVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:H/I:H/A:H/E:Usecondary · CVSS-BT (t0sche)

v3.18.8highCVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:Hsecondary · Cisco PSIRT US

ssvc

A stakeholder decision — act, attend, or track — from exploitation and impact.

Exploitation: none · Automatable: no · Technical Impact: totalcoordinatorcisa_ssvcUS

weaknesses

The CWE weakness classes this flaw belongs to.

CWE-269USprimaryCWE-201USCWE-284US

affected products (16)

Products and version ranges known to be affected.

Cisco Cisco Jabberall versionscisco_csafUS
Cisco Cisco Jabber≤ n/aenisa_euvdEU
Cisco Systems Inc. Jabber for Windows12.1 → 12.1.4fstec_bduRU
Cisco Systems Inc. Jabber for Windows12.5 → 12.5.3fstec_bduRU
Cisco Systems Inc. Jabber for Windows12.6 → 12.6.4fstec_bduRU
Cisco Systems Inc. Jabber for Windows12.7 → 12.7.3fstec_bduRU
Cisco Systems Inc. Jabber for Windows12.8 → 12.8.4fstec_bduRU
Cisco Systems Inc. Jabber for Windows12.9 → 12.9.3fstec_bduRU
cisco jabber= 12.9(0)nvdUScpe:2.3:a:cisco:jabber:*:*:*:*:*:*:*:*
cisco jabber= 12.9(1)nvdUScpe:2.3:a:cisco:jabber:*:*:*:*:*:*:*:*
cisco jabber= 12.9(2)nvdUScpe:2.3:a:cisco:jabber:*:*:*:*:*:*:*:*
cisco jabber= 12.9(3)nvdUScpe:2.3:a:cisco:jabber:*:*:*:*:*:*:*:*
cisco jabber for mobile platforms= 12.9(0)nvdUScpe:2.3:a:cisco:jabber_for_mobile_platforms:*:*:*:*:*:*:*:*
cisco jabber for mobile platforms= 12.9(1)nvdUScpe:2.3:a:cisco:jabber_for_mobile_platforms:*:*:*:*:*:*:*:*
cisco jabber for mobile platforms= 12.9(2)nvdUScpe:2.3:a:cisco:jabber_for_mobile_platforms:*:*:*:*:*:*:*:*
cisco jabber for mobile platforms= 12.9(3)nvdUScpe:2.3:a:cisco:jabber_for_mobile_platforms:*:*:*:*:*:*:*:*

advisories (1)

Vendor and ecosystem advisories describing this.

cisco-sa-jabber-ZktzjpgOCisco Jabber Desktop and Mobile Client Software Vulnerabilities2020-12-10csaf · cisco_csafUS
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 ["#details"] section of this advisory. Cisco has released software updates that address these vulnerabilities. There are no workarounds that address these vulnerabilities.

also known as (4)

Other names and identifiers for this entity.

sources

Which sources assert this record, and when.

cnnvd enisa_euvd fstec_bdu cisco_csaf nvd NVD CVE.org MITRE

published 2020-12-11modified 2026-06-17

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references (5)

External citations — patches, advisories, analysis.

scry

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