How severe is CVE-2021-20349?

CVE-2021-20349 has a CVSS 3.x base score of 5.3, rated medium severity. It is exploitable over local access with low attack complexity, requires low privileges and no user interaction. Impact on confidentiality is low, integrity low, and availability low.

Is CVE-2021-20349 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 0% (17th percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2021-20349?

CVE-2021-20349 primarily affects Ibm Tivoli Workload Scheduler. In total, 2 product configurations (CPEs) are listed as vulnerable; see the affected-products list for the exact versions.

How do I fix CVE-2021-20349?

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

When was CVE-2021-20349 published?

CVE-2021-20349 was published on 2021-08-09 and last updated on 2026-06-17.

CVE-2021-20349

CVE-2021-20349 is a medium-severity vulnerability in Ibm Tivoli Workload Scheduler 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-787.

Key facts

Severity: Medium (CVSS 3.x base score 5.3)
CVSS v2: 4.6
EPSS exploit prediction: 0% (17th percentile)
Actively exploited: Not listed in CISA KEV
Weakness: CWE-787
Affected product: Ibm Tivoli Workload Scheduler
Published: 2021-08-09
Last modified: 2026-06-17

Description

IBM Tivoli Workload Scheduler 9.4 and 9.5 is vulnerable to a stack-based buffer overflow, caused by improper bounds checking. A local attacker could overflow a buffer and gain lower level privileges. IBM X-Force ID: 194599.

Frequently asked questions

What is CVE-2021-20349?: IBM Tivoli Workload Scheduler 9.4 and 9.5 is vulnerable to a stack-based buffer overflow, caused by improper bounds checking. A local attacker could overflow a buffer and gain lower level privileges. IBM X-Force ID: 194599.
How severe is CVE-2021-20349?: CVE-2021-20349 has a CVSS 3.x base score of 5.3, rated medium severity. It is exploitable over local access with low attack complexity, requires low privileges and no user interaction. Impact on confidentiality is low, integrity low, and availability low.
Is CVE-2021-20349 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 0% (17th percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2021-20349?: CVE-2021-20349 primarily affects Ibm Tivoli Workload Scheduler. In total, 2 product configurations (CPEs) are listed as vulnerable; see the affected-products list for the exact versions.
How do I fix CVE-2021-20349?: Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround.
When was CVE-2021-20349 published?: CVE-2021-20349 was published on 2021-08-09 and last updated on 2026-06-17.

References

Affected products (2)

cpe:2.3:a:ibm:tivoli_workload_scheduler:9.4:*:*:*:*:*:*:*
cpe:2.3:a:ibm:tivoli_workload_scheduler:9.5:*:*:*:*:*:*:*

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