How severe is CVE-2021-29873?

CVE-2021-29873 has a CVSS 3.x base score of 8.1, rated high severity. It is exploitable over network with low attack complexity, requires low privileges and no user interaction. Impact on confidentiality is high, integrity none, and availability high.

Is CVE-2021-29873 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 1% (71st percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2021-29873?

CVE-2021-29873 primarily affects Ibm Spectrum Virtualize. In total, 10 product configurations (CPEs) are listed as vulnerable; see the affected-products list for the exact versions.

How do I fix CVE-2021-29873?

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

When was CVE-2021-29873 published?

CVE-2021-29873 was published on 2021-10-21 and last updated on 2026-06-17.

CVE-2021-29873

CVE-2021-29873 is a high-severity vulnerability in Ibm Spectrum Virtualize with a CVSS 3.x base score of 8.1. It is not currently listed as actively exploited by CISA, and its EPSS exploit-prediction score is low.

Key facts

Severity: High (CVSS 3.x base score 8.1)
CVSS v2: 5.5
EPSS exploit prediction: 1% (71st percentile)
Actively exploited: Not listed in CISA KEV
Affected product: Ibm Spectrum Virtualize
Published: 2021-10-21
Last modified: 2026-06-17

Description

IBM Flash System 900 could allow an authenticated attacker to obtain sensitive information and cause a denial of service due to a restricted shell escape vulnerability. IBM X-Force ID: 206229.

Frequently asked questions

What is CVE-2021-29873?: IBM Flash System 900 could allow an authenticated attacker to obtain sensitive information and cause a denial of service due to a restricted shell escape vulnerability. IBM X-Force ID: 206229.
How severe is CVE-2021-29873?: CVE-2021-29873 has a CVSS 3.x base score of 8.1, rated high severity. It is exploitable over network with low attack complexity, requires low privileges and no user interaction. Impact on confidentiality is high, integrity none, and availability high.
Is CVE-2021-29873 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 1% (71st percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2021-29873?: CVE-2021-29873 primarily affects Ibm Spectrum Virtualize. In total, 10 product configurations (CPEs) are listed as vulnerable; see the affected-products list for the exact versions.
How do I fix CVE-2021-29873?: Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround. Given its high severity, prioritise patching exposed systems.
When was CVE-2021-29873 published?: CVE-2021-29873 was published on 2021-10-21 and last updated on 2026-06-17.

References

Affected products (10)

cpe:2.3:a:ibm:spectrum_virtualize:*:*:*:*:*:*:*:*
cpe:2.3:a:ibm:spectrum_virtualize_for_public_cloud:*:*:*:*:*:*:*:*
cpe:2.3:a:ibm:storwize_v3500_software:*:*:*:*:*:*:*:*
cpe:2.3:a:ibm:storwize_v3700_software:*:*:*:*:*:*:*:*
cpe:2.3:a:ibm:storwize_v5000_software:*:*:*:*:*:*:*:*
cpe:2.3:a:ibm:storwize_v5100_software:*:*:*:*:*:*:*:*
cpe:2.3:a:ibm:storwize_v7000_software:*:*:*:*:*:*:*:*
cpe:2.3:o:ibm:san_volume_controller_firmware:*:*:*:*:*:*:*:*
cpe:2.3:o:ibm:flashsystem_9100_firmware:*:*:*:*:*:*:*:*
cpe:2.3:o:ibm:flashsystem_9000_firmware:*:*:*:*:*:*:*:*

More vulnerabilities in Ibm Spectrum Virtualize

CVE-2021-38969 — Critical (CVSS 9.8): IBM Spectrum Virtualize 8.2, 8.3, and 8.4 could allow an attacker to allow unauthorized access due to the reuse of…
CVE-2018-1434 — High (CVSS 8.8): IBM SAN Volume Controller, IBM Storwize, IBM Spectrum Virtualize and IBM FlashSystem products ( 6.1, 6.2, 6.3, 6.4,…
CVE-2020-4686 — High (CVSS 8.1): IBM Spectrum Virtualize 8.3.1 could allow a remote user authenticated via LDAP to escalate their privileges and perform…
CVE-2018-1462 — High (CVSS 7.6): IBM SAN Volume Controller, IBM Storwize, IBM Spectrum Virtualize and IBM FlashSystem products ( 6.1, 6.2, 6.3, 6.4,…
CVE-2018-1438 — High (CVSS 7.5): IBM SAN Volume Controller, IBM Storwize, IBM Spectrum Virtualize and IBM FlashSystem products ( 6.1, 6.2, 6.3, 6.4,…
CVE-2018-1433 — High (CVSS 7.5): IBM SAN Volume Controller, IBM Storwize, IBM Spectrum Virtualize and IBM FlashSystem products ( 6.1, 6.2, 6.3, 6.4,…

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