How severe is CVE-2020-4340?

CVE-2020-4340 has a CVSS 3.x base score of 4.3, rated medium severity. It is exploitable over network with low attack complexity, requires no privileges and user interaction. Impact on confidentiality is none, integrity low, and availability none.

Is CVE-2020-4340 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 1% (48th percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2020-4340?

CVE-2020-4340 affects Ibm Security Secret Server. See the affected-products list for the exact vulnerable versions.

How do I fix CVE-2020-4340?

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

When was CVE-2020-4340 published?

CVE-2020-4340 was published on 2020-09-23 and last updated on 2026-06-17.

CVE-2020-4340

CVE-2020-4340 is a medium-severity vulnerability in Ibm Security Secret Server with a CVSS 3.x base score of 4.3. 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-295.

Key facts

Severity: Medium (CVSS 3.x base score 4.3)
CVSS v2: 4.3
EPSS exploit prediction: 1% (48th percentile)
Actively exploited: Not listed in CISA KEV
Weakness: CWE-295
Affected product: Ibm Security Secret Server
Published: 2020-09-23
Last modified: 2026-06-17

Description

IBM Security Secret Server prior to 10.9 could allow an attacker to bypass SSL security due to improper certificate validation. IBM X-Force ID: 178180.

Frequently asked questions

What is CVE-2020-4340?: IBM Security Secret Server prior to 10.9 could allow an attacker to bypass SSL security due to improper certificate validation. IBM X-Force ID: 178180.
How severe is CVE-2020-4340?: CVE-2020-4340 has a CVSS 3.x base score of 4.3, rated medium severity. It is exploitable over network with low attack complexity, requires no privileges and user interaction. Impact on confidentiality is none, integrity low, and availability none.
Is CVE-2020-4340 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 1% (48th percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2020-4340?: CVE-2020-4340 affects Ibm Security Secret Server. See the affected-products list for the exact vulnerable versions.
How do I fix CVE-2020-4340?: Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround.
When was CVE-2020-4340 published?: CVE-2020-4340 was published on 2020-09-23 and last updated on 2026-06-17.

References

Affected products (1)

cpe:2.3:a:ibm:security_secret_server:*:*:*:*:*:*:*:*

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