How severe is CVE-2021-20418?

CVE-2021-20418 has a CVSS 3.x base score of 9.8, rated critical severity. It is exploitable over network with low attack complexity, requires no privileges and no user interaction. Impact on confidentiality is high, integrity high, and availability high.

Is CVE-2021-20418 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 1% (57th percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2021-20418?

CVE-2021-20418 affects Ibm Security Guardium. See the affected-products list for the exact vulnerable versions.

How do I fix CVE-2021-20418?

Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround. Given its critical severity, prioritise patching exposed systems.

When was CVE-2021-20418 published?

CVE-2021-20418 was published on 2021-08-11 and last updated on 2026-06-17.

CVE-2021-20418

CVE-2021-20418 is a critical-severity vulnerability in Ibm Security Guardium with a CVSS 3.x base score of 9.8. 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-521.

Key facts

Severity: Critical (CVSS 3.x base score 9.8)
CVSS v2: 5.0
EPSS exploit prediction: 1% (57th percentile)
Actively exploited: Not listed in CISA KEV
Weakness: CWE-521
Affected product: Ibm Security Guardium
Published: 2021-08-11
Last modified: 2026-06-17

Description

IBM Security Guardium 11.2 does not require that users should have strong passwords by default, which makes it easier for attackers to compromise user accounts. IBM X-Force ID: 196279.

Frequently asked questions

What is CVE-2021-20418?: IBM Security Guardium 11.2 does not require that users should have strong passwords by default, which makes it easier for attackers to compromise user accounts. IBM X-Force ID: 196279.
How severe is CVE-2021-20418?: CVE-2021-20418 has a CVSS 3.x base score of 9.8, rated critical severity. It is exploitable over network with low attack complexity, requires no privileges and no user interaction. Impact on confidentiality is high, integrity high, and availability high.
Is CVE-2021-20418 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 1% (57th percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2021-20418?: CVE-2021-20418 affects Ibm Security Guardium. See the affected-products list for the exact vulnerable versions.
How do I fix CVE-2021-20418?: Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround. Given its critical severity, prioritise patching exposed systems.
When was CVE-2021-20418 published?: CVE-2021-20418 was published on 2021-08-11 and last updated on 2026-06-17.

References

Affected products (1)

cpe:2.3:a:ibm:security_guardium:11.2:*:*:*:*:*:*:*

More vulnerabilities in Ibm Security Guardium

CVE-2023-35893 — Critical (CVSS 9.9): IBM Security Guardium 10.6, 11.3, 11.4, and 11.5 could allow a remote authenticated attacker to execute arbitrary…
CVE-2017-1253 — Critical (CVSS 9.9): IBM Security Guardium 10.0 could allow a remote authenticated attacker to execute arbitrary commands on the system. By…
CVE-2020-4690 — Critical (CVSS 9.8): IBM Security Guardium 11.3 contains hard-coded credentials, such as a password or cryptographic key, which it uses for…
CVE-2021-20426 — Critical (CVSS 9.8): IBM Security Guardium 11.2 contains hard-coded credentials, such as a password or cryptographic key, which it uses for…
CVE-2020-4193 — Critical (CVSS 9.8): IBM Security Guardium 11.1 uses an inadequate account lockout setting that could allow a remote attacker to brute force…
CVE-2020-4177 — Critical (CVSS 9.8): IBM Security Guardium 11.1 contains hard-coded credentials, such as a password or cryptographic key, which it uses for…

All CVEs affecting Ibm Security Guardium →

Other CWE-521 (Weak Password Requirements) vulnerabilities

CVE-2026-25715 — Critical (CVSS 9.8): The web management interface of the device allows the administrator username and password to be set to blank values.…
CVE-2025-53963 — Critical (CVSS 9.8): An issue was discovered on Thermo Fisher Ion Torrent OneTouch 2 INS1005527 devices. They run an SSH server accessible…
CVE-2025-63747 — Critical (CVSS 9.8): QaTraq 6.9.2 ships with administrative account credentials which are enabled in default installations and permit…
CVE-2025-12552 — Critical (CVSS 9.8): Insufficient Password Policy.This issue affects BLU-IC2: through 1.19.5; BLU-IC4: through 1.19.5.
CVE-2025-11200 — Critical (CVSS 9.8): MLflow Weak Password Requirements Authentication Bypass Vulnerability. This vulnerability allows remote attackers to…
CVE-2025-12364 — Critical (CVSS 9.8): Weak Password Policy.This issue affects BLU-IC2: through 1.19.5; BLU-IC4: through 1.19.5.

Browse all CWE-521 (Weak Password Requirements) vulnerabilities →