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TI-2021-03742 Aliases CVE-2021-20491GHSA-77mx-2f97-rf4c

Out-of-bounds write in IBM Spectrum Protect Server

Priority LOW 20CWE-787Published · Updated

Key facts

Attack vector
Local
Privileges required
High
User interaction
None
Attack complexity
Low
Impact type
Denial of service
Confidentiality · integrity · availability
None · None · High
Fix status
No fix listed

Attack profile from CVSS 3.1 · NVD. Fix status from CNA. Impact type from CWE-787 and the CVSS impact.

Summary

IBM Spectrum Protect Server 7.1 and 8.1 is subject to a stack-based buffer overflow caused by improper bounds checking during the parsing of commands. By issuing such a command with an improper parameter, an authorized administrator could overflow a buffer and cause the server to crash. IBM X-Force ID: 197792.

Why it matters now

EPSS 0.00286 21st percentileScored 2026-11-07
Fix No fix listed No fixed version in the sources yet

SSVC decision points

Not available: CISA has not published SSVC decision points for this record.

Affected products

VendorProductAffected versionsFixed inStatusSource
IBMSpectrum Protect Server8.1; 7.1—No fix listedCNA
  • Spectrum Protect Server VendorIBM Affected 8.1; 7.1 Fixed in — No fix listed CNA

CPE configurations NVD · 2

CPEVersionsRoleVendor
cpe:2.3:a:ibm:spectrum_protect:*:*:*:*:*:*:*:*7.1.0.000 to before 7.1.13; 8.1.0.000 – 8.1.10.100VulnerableIBM
cpe:2.3:a:ibm:spectrum_protect:8.1.11.000:*:*:*:*:*:*:*8.1.11.000VulnerableIBM
  • cpe:2.3:a:ibm:spectrum_protect:*:*:*:*:*:*:*:* Versions 7.1.0.000 to before 7.1.13; 8.1.0.000 – 8.1.10.100 Vulnerable ·IBM
  • cpe:2.3:a:ibm:spectrum_protect:8.1.11.000:*:*:*:*:*:*:* Versions 8.1.11.000 Vulnerable ·IBM

Remediation

No fixed version listed by the sources yet.

Timeline

  1. 2026-10-02 Threatist record created from CVE-2021-20491
  2. 2026-10-03 Alias added: GHSA-77mx-2f97-rf4c

References

Patch 1

  • TI-2020-03633 OS command injection in IBM Spectrum Protect Plus CVSS 3.1CRITICAL 9.8
  • TI-2020-03639 OS command injection in IBM Spectrum Protect Plus CVSS 3.1CRITICAL 9.8
  • TI-2020-03635 OS command injection in IBM Spectrum Protect Plus CVSS 3.1CRITICAL 9.8
  • TI-2020-03634 Improper input validation in IBM Spectrum Protect Plus CVSS 3.1CRITICAL 9.8
  • TI-2020-03632 OS command injection in IBM Spectrum Protect Plus CVSS 3.1CRITICAL 9.8
  • TI-2020-03789 Improper input validation in IBM Spectrum Protect CVSS 3.1CRITICAL 9.8
See all 17 →

Sources

This product uses the NVD API but is not endorsed or certified by the NVD. Sources and licences