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Fencer Vulns
high 8.8

CVE-2021-29873 json

IBM Flash System 900 could allow an authenticated attacker to obtain sensitive information and cause a denial of service due to a restricte…

published 2021-10-21 5 y ago modified 2026-06-17 4 mo ago also EUVD-2021-16347

cvss
8.8
version 3.0, CNA
cisa kev
Not listed
not in CISA's catalog
epss
1.5%
EPSS 1.5% chance of exploitation in 30 days, percentile 74%
public exploits
0
none known

Summary

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.

Patch / fix

  • ibm spectrum_virtualize 8.4.0.0
  • ibm spectrum_virtualize_for_public_cloud 8.4.0.0
  • ibm storwize_v3500_software 8.4.0.0
  • ibm storwize_v3700_software 8.4.0.0
  • ibm storwize_v5000_software 8.4.0.0
  • ibm storwize_v5100_software 8.4.0.0
  • ibm storwize_v7000_software 8.4.0.0
  • ibm san_volume_controller_firmware 8.4.0.0
  • ibm flashsystem_9100_firmware 8.4.0.0
  • ibm flashsystem_9000_firmware 8.4.0.0

Exploit prediction

1.53% chance of exploitation in the next 30 days, higher than 74% of all scored CVEs (FIRST EPSS, 2026-11-08).

CVSS scores

assigned by version score vector
CNA 3.0 8.8 CVSS:3.0/A:H/AV:N/I:H/PR:L/C:H/S:U/UI:N/AC:L/E:U/RC:C/RL:O
NVD 3.1 8.1 CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:H
CNA 3.0 8.8 CVSS:3.0/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
NVD 2.0 5.5 AV:N/AC:L/Au:S/C:P/I:N/A:P

Affected products

  • IBM FlashSystem 900
  • IBM FlashSystem V9000
  • IBM Storwize V3500
  • IBM Storwize V5000
  • IBM Storwize V5100
  • IBM FlashSystem 9100 Family
  • IBM Storwize V3700
  • IBM SAN Volume Controller
  • IBM Storwize V7000
  • IBM Spectrum Virtualize Software
  • IBM Spectrum Virtualize for Public Cloud

References

Sources

Fencer Vulns keeps one entry per vulnerability: the CVE id wins, then GHSA, and records that alias each other are merged, except that two CVEs always keep separate entries. The same data is available as JSON.