How severe is CVE-2020-4660?

CVE-2020-4660 has a CVSS 3.x base score of 5.3, rated medium severity. It is exploitable over an adjacent network with high attack complexity, requires no privileges and no user interaction. Impact on confidentiality is high, integrity none, and availability none.

Is CVE-2020-4660 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 0% (36th percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2020-4660?

CVE-2020-4660 primarily affects Ibm Security Access Manager. In total, 2 product configurations (CPEs) are listed as vulnerable; see the affected-products list for the exact versions.

How do I fix CVE-2020-4660?

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

When was CVE-2020-4660 published?

CVE-2020-4660 was published on 2020-10-12 and last updated on 2026-06-17.

CVE-2020-4660

CVE-2020-4660 is a medium-severity vulnerability in Ibm Security Access Manager 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-203.

Key facts

Severity: Medium (CVSS 3.x base score 5.3)
CVSS v2: 2.9
EPSS exploit prediction: 0% (36th percentile)
Actively exploited: Not listed in CISA KEV
Weakness: CWE-203
Affected product: Ibm Security Access Manager
Published: 2020-10-12
Last modified: 2026-06-17

Description

IBM Security Access Manager 9.0.7 and IBM Security Verify Access 10.0.0 could allow an attacker to obtain sensitive using timing side channel attacks which could aid in further attacks against the system. IBM X-Force ID: 186140.

Frequently asked questions

What is CVE-2020-4660?: IBM Security Access Manager 9.0.7 and IBM Security Verify Access 10.0.0 could allow an attacker to obtain sensitive using timing side channel attacks which could aid in further attacks against the system. IBM X-Force ID: 186140.
How severe is CVE-2020-4660?: CVE-2020-4660 has a CVSS 3.x base score of 5.3, rated medium severity. It is exploitable over an adjacent network with high attack complexity, requires no privileges and no user interaction. Impact on confidentiality is high, integrity none, and availability none.
Is CVE-2020-4660 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 0% (36th percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2020-4660?: CVE-2020-4660 primarily affects Ibm Security Access Manager. In total, 2 product configurations (CPEs) are listed as vulnerable; see the affected-products list for the exact versions.
How do I fix CVE-2020-4660?: Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround.
When was CVE-2020-4660 published?: CVE-2020-4660 was published on 2020-10-12 and last updated on 2026-06-17.

References

Affected products (2)

cpe:2.3:a:ibm:security_access_manager:9.0.7.0:*:*:*:*:*:*:*
cpe:2.3:a:ibm:security_verify_access:10.0.0:*:*:*:*:*:*:*

More vulnerabilities in Ibm Security Access Manager

CVE-2018-1722 — Critical (CVSS 10.0): IBM Security Access Manager Appliance 9.0.4.0 and 9.0.5.0 could allow remote code execution when Advanced Access…
CVE-2020-4499 — Critical (CVSS 9.8): IBM Security Access Manager 9.0.7 and IBM Security Verify Access 10.0.0 could allow an unauthorized public Oauth client…
CVE-2016-3028 — Critical (CVSS 9.1): IBM Security Access Manager for Web 7.0 before IF2 and 8.0 before 8.0.1.4 IF3 and Security Access Manager 9.0 before…
CVE-2019-4135 — High (CVSS 8.8): IBM Security Access Manager 9.0.1 through 9.0.6 is affected by a security vulnerability that could allow authenticated…
CVE-2018-1850 — High (CVSS 8.8): IBM Security Access Manager Appliance 9.0.3.1, 9.0.4.0 and 9.0.5.0 could allow unauthorized administration operations…
CVE-2016-3025 — High (CVSS 8.1): IBM Security Access Manager for Mobile 8.x before 8.0.1.4 IF3 and Security Access Manager 9.x before 9.0.1.0 IF5 do not…

All CVEs affecting Ibm Security Access Manager →

Other CWE-203 (Observable Discrepancy) vulnerabilities

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CVE-2024-25714 — Critical (CVSS 9.8): In Rhonabwy through 1.1.13, HMAC signature verification uses a strcmp function that is vulnerable to side-channel…
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Browse all CWE-203 (Observable Discrepancy) vulnerabilities →