9.9

CVE-2021-1417: cisco cisco jabber Improper Null Termination

CVSS: 9.9v3.1CriticalModified
Published 24-03-2021Last modified 08-11-2024
Open JSON

Vulnerability summary

CVE-2021-1417 is a critical (CVSS 9.9) Improper Null Termination vulnerability in cisco cisco jabber. EPSS estimates a 0.99% chance of exploitation in the next 30 days, higher than 61.9% of scored vulnerabilities.

Overall risk
70/100
0100
High · default modelHow is this calculated?
CVSS score
9.9/10
010
Critical · v3.1 (CVE.org)
EPSS score
0.99%
0%100%
Low · +0.03 pp in 30 days
KEVNot listedIn no KEV catalog
RansomwareNone recordedNo known use recorded
Public exploits0No public exploits recorded

Timeline

  1. 24-03-2021
    PublishedVulnerability first disclosed.
  2. 08-11-2024
    Last modifiedVulnerability information updated.

Description

Multiple vulnerabilities in Cisco Jabber for Windows, Cisco Jabber for MacOS, and Cisco Jabber for mobile platforms could allow an attacker to execute arbitrary programs on the underlying operating system with elevated privileges, access sensitive information, intercept protected network traffic, or cause a denial of service (DoS) condition. For more information about these vulnerabilities, see the Details section of this advisory.

CVSS metrics

3 scores · 2 sources · 2 versions

EPSS trend

Probability

0.99%

Chance of exploitation in the next 30 days

Percentile

62%

Versus all other CVEs

30-day change

+0.03 pp

From 0.96% on 19-09-2026

19-09-202619-10-2026
EPSS score
0.99%

Known exploited

Compare KEV catalogs

Not in any of the 3 tracked catalogs.

Public exploits

0 found

No public exploits indexed.

Weaknesses

CWE · root cause

Affected systems

Cisco2 products
  • cisco jabbern/a
  • jabber< 12.1.5 | ≥ 12.5.0, < 12.5.4 | ≥ 12.6.0, < 12.6.5 | ≥ 12.7.0, < 12.7.4 | ≥ 12.8.0, < 12.8.5 | ≥ 12.9.0, < 12.9.5

1 vendor · 2 products

References

1 links