How severe is CVE-2020-4399?

CVE-2020-4399 has a CVSS 3.x base score of 6.5, rated medium severity. It is exploitable over network with low attack complexity, requires low privileges and no user interaction. Impact on confidentiality is none, integrity none, and availability high.

Is CVE-2020-4399 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 1% (63rd percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2020-4399?

CVE-2020-4399 primarily affects Ibm Verify Gateway. In total, 2 product configurations (CPEs) are listed as vulnerable; see the affected-products list for the exact versions.

How do I fix CVE-2020-4399?

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

When was CVE-2020-4399 published?

CVE-2020-4399 was published on 2020-07-22 and last updated on 2026-06-17.

CVE-2020-4399

CVE-2020-4399 is a medium-severity vulnerability in Ibm Verify Gateway with a CVSS 3.x base score of 6.5. It is not currently listed as actively exploited by CISA, and its EPSS exploit-prediction score is low.

Key facts

Severity: Medium (CVSS 3.x base score 6.5)
CVSS v2: 4.0
EPSS exploit prediction: 1% (63rd percentile)
Actively exploited: Not listed in CISA KEV
Affected product: Ibm Verify Gateway
Published: 2020-07-22
Last modified: 2026-06-17

Description

IBM Verify Gateway (IVG) 1.0.0 and 1.0.1 could allow an authenticated user to send malformed requests to cause a denial of service against the server. IBM X-Force ID: 179476.

Frequently asked questions

What is CVE-2020-4399?: IBM Verify Gateway (IVG) 1.0.0 and 1.0.1 could allow an authenticated user to send malformed requests to cause a denial of service against the server. IBM X-Force ID: 179476.
How severe is CVE-2020-4399?: CVE-2020-4399 has a CVSS 3.x base score of 6.5, rated medium severity. It is exploitable over network with low attack complexity, requires low privileges and no user interaction. Impact on confidentiality is none, integrity none, and availability high.
Is CVE-2020-4399 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 1% (63rd percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2020-4399?: CVE-2020-4399 primarily affects Ibm Verify Gateway. In total, 2 product configurations (CPEs) are listed as vulnerable; see the affected-products list for the exact versions.
How do I fix CVE-2020-4399?: Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround.
When was CVE-2020-4399 published?: CVE-2020-4399 was published on 2020-07-22 and last updated on 2026-06-17.

References

Affected products (2)

cpe:2.3:a:ibm:verify_gateway:1.0.0:*:*:*:*:*:*:*
cpe:2.3:a:ibm:verify_gateway:1.0.1:*:*:*:*:*:*:*

More vulnerabilities in Ibm Verify Gateway

CVE-2020-4385 — Critical (CVSS 9.8): IBM Verify Gateway (IVG) 1.0.0 and 1.0.1 contains hard-coded credentials, such as a password or cryptographic key,…
CVE-2020-4372 — High (CVSS 7.8): IBM Verify Gateway (IVG) 1.0.0 and 1.0.1 stores user credentials in plain in clear text which can be read by a local…
CVE-2020-4400 — High (CVSS 7.5): IBM Verify Gateway (IVG) 1.0.0 and 1.0.1 uses an inadequate account lockout setting that could allow a remote attacker…
CVE-2020-4397 — Medium (CVSS 5.9): IBM Verify Gateway (IVG) 1.0.0 and 1.0.1 transmits sensitive information in plain text which could be obtained by an…
CVE-2020-4369 — Medium (CVSS 5.5): IBM Verify Gateway (IVG) 1.0.0 and 1.0.1 stores highly sensitive information in cleartext that could be obtained by a…
CVE-2020-4405 — Medium (CVSS 4.3): IBM Verify Gateway (IVG) 1.0.0 and 1.0.1 could disclose potentially sensitive information to an authenticated user due…

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