CVE-2020-3498

mediumpriority · track · 27EPSS 0.016 · 76 %ileEURUUS

grimoire priorityP3 · Track

Exploitable?

—

no known exploitation

Likely / severe?

1.63% (76th) EPSS

CVSS 4 · medium

Is it mine?

14 products

Check your exposure

Who says so?

5 sources

cnnvd · enisa_euvd · fstec_bdu · cisco_csaf

EPSS · scored 2026-10-27

A vulnerability in Cisco Jabber software could allow an authenticated, remote attacker to gain access to sensitive information. The vulnerability is due to improper validation of message contents. An attacker could exploit this vulnerability by sending specially crafted messages to a targeted system. A successful exploit could allow the attacker to cause the application to return sensitive authentication information to another system, possibly for use in further attacks.

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.

6.5

010

base score 0–10 · higher = more severe · hover a vector to decode

v2.04mediumAV:N/AC:L/Au:S/C:P/I:N/A:Nprimary · NVD / NIST USexploitability 8 · impact 2.9

v3.16.5mediumCVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:Nprimary · NVD / NIST USexploitability 2.8 · impact 3.6

v3.16.5mediumAV:N/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:Nsecondary · FSTEC (BDU) RU

v3.16.5mediumCVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:Nsecondary · ENISA EU

v3.16.5mediumCVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:Nsecondary · psirt@cisco.com USexploitability 2.8 · impact 3.6

v3.16mediumCVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:N/E:Usecondary · CVSS-BT (t0sche)

v3.16.5mediumCVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:Nsecondary · Cisco PSIRT US

ssvc

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

Trackcoordinatorcisa_ssvcUS

weaknesses

The CWE weakness classes this flaw belongs to.

CWE-20USprimaryCWE-200USCWE-200US

affected products (14)

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 → 12.1.3fstec_bduRU
Cisco Systems Inc. Jabber for Windows12.5 → 12.5.2fstec_bduRU
Cisco Systems Inc. Jabber for Windows12.6 → 12.6.3fstec_bduRU
Cisco Systems Inc. Jabber for Windows12.7 → 12.7.2fstec_bduRU
Cisco Systems Inc. Jabber for Windows12.8 → 12.8.3fstec_bduRU
Cisco Systems Inc. Jabber for Windows12.9 → 12.9.1fstec_bduRU
cisco jabber12.1 → 12.1.3nvdUScpe:2.3:a:cisco:jabber:*:*:*:*:*:*:*:*
cisco jabber12.5 → 12.5.2nvdUScpe:2.3:a:cisco:jabber:*:*:*:*:*:*:*:*
cisco jabber12.6 → 12.6.3nvdUScpe:2.3:a:cisco:jabber:*:*:*:*:*:*:*:*
cisco jabber12.7 → 12.7.2nvdUScpe:2.3:a:cisco:jabber:*:*:*:*:*:*:*:*
cisco jabber12.8 → 12.8.3nvdUScpe:2.3:a:cisco:jabber:*:*:*:*:*:*:*:*
cisco jabber12.9 → 12.9.1nvdUScpe:2.3:a:cisco:jabber:*:*:*:*:*:*:*:*

advisories (1)

Vendor and ecosystem advisories describing this.

cisco-sa-jabber-ttcgB9R3Cisco Jabber for Windows Information Disclosure Vulnerability2020-09-02csaf · cisco_csafUS
A vulnerability in Cisco Jabber software could allow an authenticated, remote attacker to gain access to sensitive information. The vulnerability is due to improper validation of message contents. An attacker could exploit this vulnerability by sending specially crafted messages to a targeted system. A successful exploit could allow the attacker to cause the application to return sensitive authentication information to another system, possibly for use in further attacks. Cisco has released software updates that address this vulnerability. There are no workarounds that address this vulnerability.

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 2020-09-04modified 2026-06-17

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+25171 more

references (6)

External citations — patches, advisories, analysis.

scry

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