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01 Record

CVE-2021-20491

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

MediumPUBLISHEDCNA: ibm
CNA base score4.4 CVSS v3.xCVSS:3.0/I:N/A:H/UI:N/C:N/S:U/AV:L/AC:L/PR:H/RL:O/E:U/RC:C
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02 Description

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

03 Exploitation and scoring

Exploitation
Not assessed. CISA has not published an exploitation assessment for this record, and it is not in the KEV catalog. That is an absence of assessment, not a finding of no risk.
SSVC decision
Not assessed by CISA
EPSS probability
0.25% probability of exploitation activity in the next 30 days.
EPSS percentile
Equal to or higher than the score of 17.2% of scored records. A rank, not a probability.
NVD base score
4.4 (CVSS v3.x), scored by the NVD independently of the CNA.
NVD CVSS vector
CVSS:3.1/AV:L/AC:L/PR:H/UI:N/S:U/C:N/I:N/A:H
NVD analysis status
Modified. NVD last modified this record on 2026-06-17.
Red Hat severity
No Red Hat rating. Red Hat rates the CVEs that affect its products.

Exploit-prediction scores from FIRST. Independent scoring and analysis status from the NVD. Vendor severity from Red Hat. Exploitation assessment and catalog membership from CISA.

04 Metadata

Published
2021-04-16 15:40Z5 YR AGO
Last updated
2024-09-16 19:15Z2 YR AGO
Reserved
2020-12-17
Assigning CNA
ibm
Record state
PUBLISHED
Severity
Medium (CVSS 4.4)
CNA CVSS vector
CVSS:3.0/I:N/A:H/UI:N/C:N/S:U/AV:L/AC:L/PR:H/RL:O/E:U/RC:C
Weaknesses
Data version
5.1
Document digest
e248b229f1c9ff13cdaf7cd8671924b93214de05a7821e543f2b2c2d82af1757

05 Affected products

VendorProductVersionsPlatforms
IBMSpectrum Protect Server8.1, 7.1—

06 References