Out-of-bounds write in IBM Spectrum Protect for Space Management
Priority LOW 24CWE-787Published · Updated
Key facts
- Attack vector
- Local
- Privileges required
- Low
- 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 Client 8.1.0.0 through 8.1.11.0 is vulnerable to a stack-based buffer overflow, caused by improper bounds checking. A local attacker could overflow a buffer and cause the application to crash. IBM X-Force ID: 198934
Why it matters now
EPSS 0.00266 18th 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
| Vendor | Product | Affected versions | Fixed in | Status | Source |
|---|---|---|---|---|---|
| IBM | Spectrum Protect for Space Management | 8.1.0.0; 8.1.11.0 | — | No fix listed | CNA |
- Spectrum Protect for Space Management VendorIBM Affected 8.1.0.0; 8.1.11.0 Fixed in — No fix listed CNA
Remediation
No fixed version listed by the sources yet.
Timeline
- 2026-10-02 Threatist record created from CVE-2021-20546
- 2026-10-03 Alias added: GHSA-x4wg-5xxw-qhh7
References
More IBM Spectrum Protect Client vulnerabilities
- TI-2020-03837 Improper authentication in IBM Spectrum Protect for Space Management CVSS 3.1HIGH 7.5
- TI-2022-06757 IBM Spectrum Protect 8.1.0.0 through 8.1.14.0 dsmcad, dsmc, and dsmcsvc processes… CVSS 3.1HIGH 7.5
- TI-2018-01574 IBM Tivoli Storage Manager (IBM Spectrum Protect 7.1 and 8.1) uses weaker than expected… CVSS 3.1HIGH 7.5
- TI-2018-01402 IBM Tivoli Storage Manager (IBM Spectrum Protect 7.1 and 8.1) uses weaker than expected… CVSS 3.1HIGH 7.5
- TI-2021-10371 Out-of-bounds write in IBM Spectrum Protect for Space Management CVSS 3.1HIGH 7.8
- TI-2023-16710 IBM Storage Protect denial of service CVSS 3.1MEDIUM 6.2
Sources
- CVE-2021-20546 · CVE Program
- CVE-2021-20546 · NVD
- FIRST EPSS
- GHSA-x4wg-5xxw-qhh7 · GitHub Advisory Database · CC BY 4.0
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