How severe is CVE-2021-38977?

CVE-2021-38977 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 low, integrity none, and availability none.

Is CVE-2021-38977 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 1% (40th percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2021-38977?

CVE-2021-38977 primarily affects Ibm Security Guardium Key Lifecycle Manager. In total, 7 product configurations (CPEs) are listed as vulnerable; see the affected-products list for the exact versions.

How do I fix CVE-2021-38977?

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

When was CVE-2021-38977 published?

CVE-2021-38977 was published on 2021-11-15 and last updated on 2026-06-17.

CVE-2021-38977

CVE-2021-38977 is a medium-severity vulnerability in Ibm Security Guardium Key Lifecycle Manager 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-311.

Key facts

Severity: Medium (CVSS 3.x base score 4.3)
CVSS v2: 4.3
EPSS exploit prediction: 1% (40th percentile)
Actively exploited: Not listed in CISA KEV
Weakness: CWE-311
Affected product: Ibm Security Guardium Key Lifecycle Manager
Published: 2021-11-15
Last modified: 2026-06-17

Description

IBM Tivoli Key Lifecycle Manager 3.0, 3.0.1, 4.0, and 4.1 does not set the secure attribute on authorization tokens or session cookies. Attackers may be able to get the cookie values by sending a http:// link to a user or by planting this link in a site the user goes to. The cookie will be sent to the insecure link and the attacker can then obtain the cookie value by snooping the traffic. IBM X-Force ID: 212782.

Frequently asked questions

What is CVE-2021-38977?: IBM Tivoli Key Lifecycle Manager 3.0, 3.0.1, 4.0, and 4.1 does not set the secure attribute on authorization tokens or session cookies. Attackers may be able to get the cookie values by sending a http:// link to a user or by planting this link in a site the user goes to. The cookie will be sent to the insecure link and the attacker can then obtain the cookie value by snooping the traffic. IBM X-Force ID: 212782.
How severe is CVE-2021-38977?: CVE-2021-38977 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 low, integrity none, and availability none.
Is CVE-2021-38977 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 1% (40th percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2021-38977?: CVE-2021-38977 primarily affects Ibm Security Guardium Key Lifecycle Manager. In total, 7 product configurations (CPEs) are listed as vulnerable; see the affected-products list for the exact versions.
How do I fix CVE-2021-38977?: Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround.
When was CVE-2021-38977 published?: CVE-2021-38977 was published on 2021-11-15 and last updated on 2026-06-17.

References

Affected products (7)

cpe:2.3:a:ibm:security_guardium_key_lifecycle_manager:4.1.0:*:*:*:*:*:*:*
cpe:2.3:a:ibm:security_guardium_key_lifecycle_manager:4.1.0.1:*:*:*:*:*:*:*
cpe:2.3:a:ibm:security_guardium_key_lifecycle_manager:4.1.1:*:*:*:*:*:*:*
cpe:2.3:a:ibm:security_key_lifecycle_manager:*:*:*:*:*:*:*:*
cpe:2.3:a:ibm:security_key_lifecycle_manager:4.1.0:*:*:*:*:*:*:*
cpe:2.3:a:ibm:security_key_lifecycle_manager:4.1.0.1:*:*:*:*:*:*:*
cpe:2.3:a:ibm:security_key_lifecycle_manager:4.1.1:*:*:*:*:*:*:*

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