CVE-2026-73583

MEDIUMPre-NVD 6.66.6—
EchelonGraph scoreHIGH confidence

Score 6.6 from GitHub Security Advisory published 2026-08-13. a secondary CVSS source baseline 6.6; sources differ by 0.0.

Triggered by: GitHub Security Advisory CVSS
Sources: epss, ghsa, secondary
Trending — 3 sources updated this week
6.6EG
EchelonGraph verdictMonitorLow exploitation likelihood right now — keep watching.
  • Lower severity and no public exploit yet
CISA-KEV: Not listedEPSS PROB: 0%CVSS: 6.6Exploit: None knownExposed: 0

No vendor fix yet — apply a workaround or compensating control (WAF / firewall / segmentation) and watch for a patch.

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.

CVSS v3
6.6
EG Score
6.6(high)
EG Risk
30(Track)
EG Risk 30/100SSVC: Track

EG Risk is EchelonGraph's 0–100 priority score: it fuses intrinsic severity with real-world exploitation and automatability so you can rank equal-severity CVEs and fix the most dangerous first. Higher = act sooner. Distinct from the 0–10 EG Score (severity).

How it’s computed
Severity66% × 45%
Exploitation0% × 40%
Automatability0% × 15%
Action: Routine — remediate on your standard cadence.
EPSS PROB
0%
EPSS %ILE
1%
KEV
Not listed

Published

August 13, 2026

Last Modified

August 14, 2026

Advisory Details (2)

Auto-updated Aug 13, 2026
Patch available. Sources: redhat.
redhat

2462126 – (CVE-2026-73583) CVE-2026-73583 sblim-sfcb: Unsafe deserialization in sblim-sfcb provider-manager IPC allows out-of-bounds memory access via malformed OperationHdr

https://bugzilla.redhat.com/show_bug.cgi?id=2462126
redhat Patch Available

CVE-2026-73583 - Red Hat Customer Portal

Affected: Red Hat Enterprise Linux 8 or OpenShift Container Platform 4, is affected by this vulnerability and a fix may be released to a

https://access.redhat.com/security/cve/CVE-2026-73583

Vendor Advisories for CVE-2026-73583(1)

These vendors published their own advisory mentioning this CVE — often with vendor-specific remediation steps + affected product lists not in NVD.

Weakness Classification(1)

MITRE Common Weakness Enumeration — the root-cause categories this CVE belongs to.

Data Freshness Timeline

(refreshed 20× in last 7d / 27× in last 30d)

Each row is a source pipeline that fetched or updated this CVE on that date, with what changed. For example, "NVD update" means NVD published or revised its analysis for this CVE; "MITRE cvelistV5" means we ingested or refreshed it from the CNA feed. Most recent first.

  1. 2026-08-20 22:56 UTCEPSS rescore
  2. 2026-08-20 18:04 UTCGHSA enrichment
  3. 2026-08-19 18:30 UTCGHSA enrichment
  4. 2026-08-18 18:47 UTCEG score recompute
  5. 2026-08-18 18:47 UTCGHSA enrichment
  6. 2026-08-18 13:49 UTCEPSS rescore
  7. 2026-08-18 13:49 UTCEPSS rescore
  8. 2026-08-17 19:13 UTCEG score recompute
  9. 2026-08-17 19:13 UTCGHSA enrichment
  10. 2026-08-17 13:47 UTCEPSS rescore
  11. 2026-08-16 18:25 UTCEG score recompute
  12. 2026-08-16 18:25 UTCGHSA enrichment
  13. 2026-08-16 14:56 UTCEPSS rescore
  14. 2026-08-16 14:56 UTCEPSS rescore
  15. 2026-08-16 02:15 UTCEPSS rescore
  16. 2026-08-15 18:52 UTCEG score recompute
  17. 2026-08-15 18:52 UTCGHSA enrichment
  18. 2026-08-15 01:31 UTCEPSS rescore
  19. 2026-08-14 19:18 UTCGHSA enrichment
  20. 2026-08-14 16:03 UTCGHSA enrichment
  21. 2026-08-13 16:30 UTCEG score recompute
  22. 2026-08-13 16:30 UTCGHSA enrichment
  23. 2026-08-13 15:34 UTCEG score recompute
  24. 2026-08-13 15:34 UTCGHSA enrichment
  25. 2026-08-13 13:35 UTCEG score recompute
Show 2 more
  1. 2026-08-13 12:47 UTCEG score recompute
  2. 2026-08-13 12:46 UTCMITRE cvelistV5first tracked

Frequently asked(5)

What is CVE-2026-73583?
CVE-2026-73583 is a medium vulnerability published on August 13, 2026. 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,…
When was CVE-2026-73583 disclosed?
CVE-2026-73583 was first published in the National Vulnerability Database on August 13, 2026, with the most recent update on August 14, 2026. EchelonGraph re-ingests CVE updates from NVD on a 2-hour cycle, so this page reflects the latest published state.
Is CVE-2026-73583 actively exploited?
CVE-2026-73583 is not currently on CISA's Known Exploited Vulnerabilities catalog. FIRST EPSS estimates a 0% probability of exploitation in the next 30 days, which ranks it in the top 99.2% of all scored CVEs.
What is the CVSS score of CVE-2026-73583?
CVE-2026-73583 has a CVSS v3 base score of 6.6 (NVD).
How do I remediate CVE-2026-73583?
Patch to the fixed version published by the affected vendor. Where vendor advisories exist for CVE-2026-73583, EchelonGraph cross-links them in the Vendor Advisories panel below — those typically contain the canonical remediation steps, fixed version numbers, and any vendor-specific mitigations.

Dependency Blast Radius

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