How severe is CVE-2021-30357?

CVE-2021-30357 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-2021-30357 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 23% (97th percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2021-30357?

CVE-2021-30357 primarily affects Checkpoint Ssl Network Extender. In total, 5 product configurations (CPEs) are listed as vulnerable; see the affected-products list for the exact versions.

How do I fix CVE-2021-30357?

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

When was CVE-2021-30357 published?

CVE-2021-30357 was published on 2021-06-08 and last updated on 2026-06-17.

CVE-2021-30357

CVE-2021-30357 is a medium-severity vulnerability in Checkpoint Ssl Network Extender with a CVSS 3.x base score of 5.3. Its EPSS exploit-prediction score of 23% places it in the 97th percentile, indicating an elevated likelihood of exploitation. The underlying weakness is classified as CWE-209.

Key facts

Severity: Medium (CVSS 3.x base score 5.3)
CVSS v2: 5.0
EPSS exploit prediction: 23% (97th percentile)
Actively exploited: Not listed in CISA KEV
Weakness: CWE-209
Affected product: Checkpoint Ssl Network Extender
Published: 2021-06-08
Last modified: 2026-06-17

Description

SSL Network Extender Client for Linux before build 800008302 reveals part of the contents of the configuration file supplied, which allows partially disclosing files to which the user did not have access.

Frequently asked questions

What is CVE-2021-30357?: SSL Network Extender Client for Linux before build 800008302 reveals part of the contents of the configuration file supplied, which allows partially disclosing files to which the user did not have access.
How severe is CVE-2021-30357?: CVE-2021-30357 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-2021-30357 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 23% (97th percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2021-30357?: CVE-2021-30357 primarily affects Checkpoint Ssl Network Extender. In total, 5 product configurations (CPEs) are listed as vulnerable; see the affected-products list for the exact versions.
How do I fix CVE-2021-30357?: Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround.
When was CVE-2021-30357 published?: CVE-2021-30357 was published on 2021-06-08 and last updated on 2026-06-17.

References

https://supportcontent.checkpoint.com/solutions?id=sk173513

Affected products (5)

cpe:2.3:a:checkpoint:ssl_network_extender:r80.10:*:*:*:*:linux:*:*
cpe:2.3:a:checkpoint:ssl_network_extender:r80.20:*:*:*:*:linux:*:*
cpe:2.3:a:checkpoint:ssl_network_extender:r80.30:*:*:*:*:linux:*:*
cpe:2.3:a:checkpoint:ssl_network_extender:r80.40:*:*:*:*:linux:*:*
cpe:2.3:a:checkpoint:ssl_network_extender:r81:*:*:*:*:linux:*:*

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