CVE-2020-4019
CVE-2020-4019 is a high-severity vulnerability in Atlassian Companion with a CVSS 3.x base score of 7.8. 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-426.
Key facts
- Severity: High (CVSS 3.x base score 7.8)
- CVSS v2: 4.4
- EPSS exploit prediction: 0% (28th percentile)
- Actively exploited: Not listed in CISA KEV
- Weakness: CWE-426
- Affected product: Atlassian Companion
- Published:
- Last modified:
Description
The file editing functionality in the Atlassian Companion App before version 1.0.0 allows local attackers to have the app run a different executable in place of the app's cmd.exe via a untrusted search path vulnerability.
Frequently asked questions
- What is CVE-2020-4019?
- The file editing functionality in the Atlassian Companion App before version 1.0.0 allows local attackers to have the app run a different executable in place of the app's cmd.exe via a untrusted search path vulnerability.
- How severe is CVE-2020-4019?
- CVE-2020-4019 has a CVSS 3.x base score of 7.8, rated high severity. It is exploitable over local access with low attack complexity, requires no privileges and user interaction. Impact on confidentiality is high, integrity high, and availability high.
- Is CVE-2020-4019 being actively exploited?
- It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 0% (28th percentile), an estimate of the probability of exploitation in the next 30 days.
- What products are affected by CVE-2020-4019?
- CVE-2020-4019 affects Atlassian Companion. See the affected-products list for the exact vulnerable versions.
- How do I fix CVE-2020-4019?
- Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround. Given its high severity, prioritise patching exposed systems.
- When was CVE-2020-4019 published?
- CVE-2020-4019 was published on 2020-06-01 and last updated on 2026-06-17.
References
Affected products (1)
- cpe:2.3:a:atlassian:companion:*:*:*:*:*:*:*:*
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