How severe is CVE-2021-37326?

CVE-2021-37326 has a CVSS 3.x base score of 5.3, rated medium severity. It is exploitable over network with low attack complexity, requires no privileges and no user interaction. Impact on confidentiality is low, integrity none, and availability none.

Is CVE-2021-37326 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 1% (52nd percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2021-37326?

CVE-2021-37326 primarily affects Netsarang Xshell. In total, 6 product configurations (CPEs) are listed as vulnerable; see the affected-products list for the exact versions.

How do I fix CVE-2021-37326?

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

When was CVE-2021-37326 published?

CVE-2021-37326 was published on 2021-08-15 and last updated on 2026-06-17.

CVE-2021-37326

CVE-2021-37326 is a medium-severity vulnerability in Netsarang Xshell with a CVSS 3.x base score of 5.3. 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-200.

Key facts

Severity: Medium (CVSS 3.x base score 5.3)
CVSS v2: 5.0
EPSS exploit prediction: 1% (52nd percentile)
Actively exploited: Not listed in CISA KEV
Weakness: CWE-200
Affected product: Netsarang Xshell
Published: 2021-08-15
Last modified: 2026-06-17

Description

NetSarang Xshell 7 before Build 0077 includes unintended code strings in paste operations.

Frequently asked questions

What is CVE-2021-37326?: NetSarang Xshell 7 before Build 0077 includes unintended code strings in paste operations.
How severe is CVE-2021-37326?: CVE-2021-37326 has a CVSS 3.x base score of 5.3, rated medium severity. It is exploitable over network with low attack complexity, requires no privileges and no user interaction. Impact on confidentiality is low, integrity none, and availability none.
Is CVE-2021-37326 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 1% (52nd percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2021-37326?: CVE-2021-37326 primarily affects Netsarang Xshell. In total, 6 product configurations (CPEs) are listed as vulnerable; see the affected-products list for the exact versions.
How do I fix CVE-2021-37326?: Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround.
When was CVE-2021-37326 published?: CVE-2021-37326 was published on 2021-08-15 and last updated on 2026-06-17.

References

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

Affected products (6)

cpe:2.3:a:netsarang:xshell:7:build_0049:*:*:*:*:*:*
cpe:2.3:a:netsarang:xshell:7:build_0054:*:*:*:*:*:*
cpe:2.3:a:netsarang:xshell:7:build_0063:*:*:*:*:*:*
cpe:2.3:a:netsarang:xshell:7:build_0065:*:*:*:*:*:*
cpe:2.3:a:netsarang:xshell:7:build_0072:*:*:*:*:*:*
cpe:2.3:a:netsarang:xshell:7:build_0073:*:*:*:*:*:*

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