How severe is CVE-2020-3498?

CVE-2020-3498 has a CVSS 3.x base score of 6.5, rated medium severity. It is exploitable over network with low attack complexity, requires low privileges and no user interaction. Impact on confidentiality is high, integrity none, and availability none.

Is CVE-2020-3498 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 2% (77th percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2020-3498?

CVE-2020-3498 affects Cisco Jabber. See the affected-products list for the exact vulnerable versions.

How do I fix CVE-2020-3498?

Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround.

When was CVE-2020-3498 published?

CVE-2020-3498 was published on 2020-09-04 and last updated on 2026-06-17.

CVE-2020-3498

CVE-2020-3498 is a medium-severity vulnerability in Cisco Jabber with a CVSS 3.x base score of 6.5. It is not currently listed as actively exploited by CISA, and its EPSS exploit-prediction score is low. The underlying weakness is classified as CWE-20.

Key facts

Severity: Medium (CVSS 3.x base score 6.5)
CVSS v2: 4.0
EPSS exploit prediction: 2% (77th percentile)
Actively exploited: Not listed in CISA KEV
Weakness: CWE-20
Affected product: Cisco Jabber
Published: 2020-09-04
Last modified: 2026-06-17

Description

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.

Frequently asked questions

What is CVE-2020-3498?: 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.
How severe is CVE-2020-3498?: CVE-2020-3498 has a CVSS 3.x base score of 6.5, rated medium severity. It is exploitable over network with low attack complexity, requires low privileges and no user interaction. Impact on confidentiality is high, integrity none, and availability none.
Is CVE-2020-3498 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 2% (77th percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2020-3498?: CVE-2020-3498 affects Cisco Jabber. See the affected-products list for the exact vulnerable versions.
How do I fix CVE-2020-3498?: Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround.
When was CVE-2020-3498 published?: CVE-2020-3498 was published on 2020-09-04 and last updated on 2026-06-17.

References

https://tools.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-jabber-ttcgB9R3

Affected products (1)

cpe:2.3:a:cisco:jabber:*:*:*:*:*:windows:*:*

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