Sblim-sfcb: unsafe deserialization in sblim-sfcb provider-manager ipc allows out-of-bounds memory access via malformed operationhdr (CVE-2026-73583) | HOL Guard CVE

Medium · CVSS 6.6CVE-2026-73583

Sblim-sfcb: unsafe deserialization in sblim-sfcb provider-manager ipc allows out-of-bounds memory access via malformed operationhdr

Answer in brief

CVE-2026-73583 records a Medium severity (CVSS 6.6) vulnerability in Sblim-sfcb: unsafe deserialization in sblim-sfcb provider-manager ipc allows out-of-bounds memory access via malformed operationhdr. The current sources do not mark it as known exploited. Affected software not mapped in the current feed; confirm the named product and version against your inventory.

Analysis pending evidence review

HOL Guard separates source facts from reviewed analysis. See the methodology.

Published Aug 13, 2026Updated Aug 25, 2026Source checked Sep 27, 2026First seen by HOL Aug 13, 2026Material review Aug 25, 2026

Upstream Advisory

Key facts

Risk: Medium · CVSS 6.6
Exploitation: Not marked as known exploited
Affected software: 5 mapped packages or products
Fix availability: Not reported

Why this deserves its current priority

CVSS is 6.6. The current sources do not mark it as known exploited. Treat this as a source-backed prioritization signal, not a statement about your environment.

Analysis status

Analysis pending evidence review

Factual feed record only; HOL analysis is not approved for indexing. Read the methodology.

Affected scope and exposure questions

Affected software not mapped in the current feed; confirm the named product and version against your inventory.

Affected products and reported versions
Product	Affected versions	Fixed versions
cpe:2.3:o:redhat:enterprise_linux:10.0:::::::*	Not reported	Not reported
cpe:2.3:o:redhat:enterprise_linux:6.0:::::::*	Not reported	Not reported
cpe:2.3:o:redhat:enterprise_linux:7.0:::::::*	Not reported	Not reported
cpe:2.3:o:redhat:enterprise_linux:8.0:::::::*	Not reported	Not reported
cpe:2.3:o:redhat:enterprise_linux:9.0:::::::*	Not reported	Not reported

Recommended response

Confirm exposure. Identify whether the named product or interface exists in your inventory, then review the linked upstream references for affected versions and vendor guidance.

Evidence timeline and material changes

Published upstream
Aug 13, 2026
Evidence: source:cvelist:source_dates:source-dates:record
Source modified
Aug 25, 2026
Evidence: source:cvelist:source_dates:source-dates:record
First seen by HOL
Aug 13, 2026

Sources and claim methodology

Upstream source description

A flaw was found in sblim-sfcb. A local attacker with access to the system can exploit an unsafe deserialization vulnerability in the provider-manager's inter-process communication (IPC) message parsing. By sending a specially crafted message, the attacker can cause out-of-bounds memory access, leading to the termination of the provider-manager process and a denial of service. This could also potentially result in limited unintended information disclosure.

Quoted source text, attributed separately from HOL analysis.