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01 Record

CVE-2026-93888

IBM Sterling Connect:Direct for Unix Buffer Overflow

HighPUBLISHEDCNA: ibm
CNA base score7.8 CVSS v3.xCVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H

02 Description

IBM Sterling Connect:Direct for Unix Buffer Overflow

03 Exploitation and scoring

Exploitation
Assessed, none found. CISA's assessment recorded neither public exploit code nor evidence of exploitation when it was made.
SSVC decision
  • ExploitationnoneCISA recorded no public exploit code and no evidence of exploitation.
  • AutomatablenoAt least one step from reconnaissance to exploitation cannot be reliably automated.
  • Technical ImpacttotalSuccessful exploitation gives total control of the vulnerable component.
CISA publishes the decision points, not a final SSVC decision. The decision also depends on mission and well-being impact, which is a property of your deployment rather than of the vulnerability.
EPSS probability
0.20% probability of exploitation activity in the next 30 days.
EPSS percentile
Equal to or higher than the score of 10.7% of scored records. A rank, not a probability.
NVD base score
7.8 (CVSS v3.x), scored by the NVD independently of the CNA.
NVD CVSS vector
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
NVD analysis status
Awaiting Analysis. NVD last modified this record on 2026-10-22.
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
2026-10-20 21:39Z8 DAYS AGO
Last updated
2026-10-22 23:04Z6 DAYS AGO
Reserved
2026-09-18
Assigning CNA
ibm
Record state
PUBLISHED
Severity
High (CVSS 7.8)
CNA CVSS vector
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
Weaknesses
  • CWE-121Stack-based Buffer OverflowVariant
Data version
5.2
Document digest
d8c28f9a87a9fd72ec54da47ea0250251a168863895718360540ad4c80e50fc6

05 Affected products

VendorProductVersionsPlatforms
IBMSterling Connect Direct for Unix6.4.0.0 to 6.4.0.6, 6.3.0.0 to 6.3.0.7—

06 References

07 Remediation

IBM strongly recommends addressing the vulnerability now by upgrading ProductVersionRemediation/Fix/InstructionsIBM Sterling Connect:Direct for Unix6.4.0.0 - 6.4.0.6.iFix021Apply 6.4.0.6.iFix022, included in 6.4.0.6.iFix025 available on Fix Central https://www.ibm.com/support/fixcentral/swg/selectFixes .IBM Sterling Connect:Direct for Unix6.3.0.0 - 6.3.0.7.iFix032Apply 6.3.0.7.iFix033, available on Fix Central https://www.ibm.com/support/fixcentral/swg/selectFixes .