How severe is CVE-2021-42095?

CVE-2021-42095 has a CVSS 3.x base score of 7.5, rated high severity. It is exploitable over network with low attack complexity, requires no privileges and no user interaction. Impact on confidentiality is none, integrity none, and availability high.

Is CVE-2021-42095 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 1% (56th percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2021-42095?

CVE-2021-42095 affects Netsarang Xshell. See the affected-products list for the exact vulnerable versions.

How do I fix CVE-2021-42095?

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-2021-42095 published?

CVE-2021-42095 was published on 2021-10-07 and last updated on 2026-06-17.

CVE-2021-42095

CVE-2021-42095 is a high-severity vulnerability in Netsarang Xshell with a CVSS 3.x base score of 7.5. It is not currently listed as actively exploited by CISA, and its EPSS exploit-prediction score is low.

Key facts

Severity: High (CVSS 3.x base score 7.5)
CVSS v2: 5.0
EPSS exploit prediction: 1% (56th percentile)
Actively exploited: Not listed in CISA KEV
Affected product: Netsarang Xshell
Published: 2021-10-07
Last modified: 2026-06-17

Description

Xshell before 7.0.0.76 allows attackers to cause a crash by triggering rapid changes to the title bar.

Frequently asked questions

What is CVE-2021-42095?: Xshell before 7.0.0.76 allows attackers to cause a crash by triggering rapid changes to the title bar.
How severe is CVE-2021-42095?: CVE-2021-42095 has a CVSS 3.x base score of 7.5, rated high severity. It is exploitable over network with low attack complexity, requires no privileges and no user interaction. Impact on confidentiality is none, integrity none, and availability high.
Is CVE-2021-42095 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 1% (56th percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2021-42095?: CVE-2021-42095 affects Netsarang Xshell. See the affected-products list for the exact vulnerable versions.
How do I fix CVE-2021-42095?: 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-2021-42095 published?: CVE-2021-42095 was published on 2021-10-07 and last updated on 2026-06-17.

References

https://www.netsarang.com/en/xshell-update-history/

Affected products (1)

cpe:2.3:a:netsarang:xshell:*:*:*:*:*:*:*:*

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