CVE-2025-42921
CVE-2025-42921 is a medium-severity vulnerability in Jetbrains Toolbox with a CVSS 3.x base score of 4.2. 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-297.
Key facts
- Severity: Medium (CVSS 3.x base score 4.2)
- EPSS exploit prediction: 0% (6th percentile)
- Actively exploited: Not listed in CISA KEV
- EU (EUVD) id: EUVD-2025-11576
- Weakness: CWE-297
- Affected product: Jetbrains Toolbox
- Published:
- Last modified:
Description
In JetBrains Toolbox App before 2.6 host key verification was missing in SSH plugin
Frequently asked questions
- What is CVE-2025-42921?
- In JetBrains Toolbox App before 2.6 host key verification was missing in SSH plugin
- How severe is CVE-2025-42921?
- CVE-2025-42921 has a CVSS 3.x base score of 4.2, rated medium severity. It is exploitable over network with high attack complexity, requires no privileges and user interaction. Impact on confidentiality is low, integrity low, and availability none.
- Is CVE-2025-42921 being actively exploited?
- It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 0% (6th percentile), an estimate of the probability of exploitation in the next 30 days.
- What products are affected by CVE-2025-42921?
- CVE-2025-42921 affects Jetbrains Toolbox. See the affected-products list for the exact vulnerable versions.
- How do I fix CVE-2025-42921?
- Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround.
- Does CVE-2025-42921 have an EU (EUVD) identifier?
- Yes. CVE-2025-42921 is tracked in the ENISA EU Vulnerability Database (EUVD) as EUVD-2025-11576.
- When was CVE-2025-42921 published?
- CVE-2025-42921 was published on 2025-04-17 and last updated on 2026-06-17.
References
Affected products (1)
- cpe:2.3:a:jetbrains:toolbox:*:*:*:*:*:*:*:*
More vulnerabilities in Jetbrains Toolbox
- CVE-2020-25207 — Critical (CVSS 9.8): JetBrains ToolBox before version 1.18 is vulnerable to Remote Code Execution via a browser protocol handler.
- CVE-2025-43012 — High (CVSS 8.3): In JetBrains Toolbox App before 2.6 command injection in SSH plugin was possible
- CVE-2020-25013 — High (CVSS 7.5): JetBrains ToolBox before version 1.18 is vulnerable to a Denial of Service attack via a browser protocol handler.
- CVE-2020-15827 — High (CVSS 7.5): In JetBrains ToolBox version 1.17 before 1.17.6856, the set of signature verifications omitted the…
- CVE-2019-18368 — High (CVSS 7.3): In JetBrains Toolbox App before 1.15.5666 for Windows, privilege escalation was possible.
- CVE-2025-43013 — Medium (CVSS 6.9): In JetBrains Toolbox App before 2.6 unencrypted credential transmission during SSH authentication was possible
All CVEs affecting Jetbrains Toolbox →
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