VulnTideExploited vulnerabilities, by vendor. Data as of .
Not in CISA KEVPublished CVSS 6.6 mediumEPSS 0.1% probability of exploitation in 30 daysFound by AI: AISLE
Red Hat

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

Is it exploited?

Not on CISA's list. CISA has not added it to the Known Exploited Vulnerabilities catalog as of . If CISA adds it, this page shows it as known exploited.

How likely is exploitation in the next 30 days?
0.1%

EPSS score, percentile 2.7 of all scored records. A probability estimated by FIRST, not a report of exploitation.

How severe?
6.6 Medium

CVSS v3.1 base score, given by the CNA

What should I do?

CISA has set no required action, because the vulnerability is not in KEV.

The CVE record links no vendor advisory, patch or mitigation.

Which versions are affected?

Versions by product

Source: CISA KEV 2026.10.29, as of ; FIRST EPSS, as of ; CVE List, as of . About the data.

What to do

Workaround (from the CVE record)

To mitigate this issue, restrict access to the local connect socket used by `sblim-sfcb` to prevent untrusted local users from obtaining the internal provider-manager descriptor. Deployments where only trusted users can reach this socket will have materially reduced exposure. Consult your system's documentation for appropriate methods to secure local IPC channels and socket permissions for the `sblim-sfcb` service. A restart of the `sfcbd` service may be required for changes to take effect, which could temporarily disrupt services relying on `sblim-sfcb`.

Advisories and patches

The CVE record links no vendor advisory, patch or mitigation.

This summary is based on the CVE record as of . Check the vendor's advisory before you act: affected versions and fixes can change.

Affected products and versions

As listed in the CVE record.

Red Hat Red Hat Enterprise Linux 10
StatusVersions

Versions not listed are: affected.

Red Hat Red Hat Enterprise Linux 6
StatusVersions

Versions not listed are: unknown.

Red Hat Red Hat Enterprise Linux 7
StatusVersions

Versions not listed are: affected.

Red Hat Red Hat Enterprise Linux 8
StatusVersions

Versions not listed are: affected.

Red Hat Red Hat Enterprise Linux 9
StatusVersions

Versions not listed are: affected.

Source: CVE List, as of . About the data.

About this vulnerability

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 pot…

Summary: CVE record, as of .

  • CISA has not added CVE-2026-73583 to its Known Exploited Vulnerabilities (KEV) catalog, as of 29 Oct 2026.
  • The CVE record was published on 13 Aug 2026.
  • The CVE record carries a CVSS v3.1 base score of 6.6 (Medium), given by its CNA.
  • FIRST's EPSS model puts the probability of exploitation in the next 30 days at 0.1% (percentile 2.7), as of 29 Oct 2026. EPSS is a statistical estimate, not a report of exploitation.
  • CISA's SSVC assessment in the CVE record: exploitation none, automatable no, technical impact partial.
  • The credits in the CVE record name AISLE as finder.

Source: CISA KEV 2026.10.29, as of ; CVE List, as of ; FIRST EPSS, as of . About the data.

Description

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

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.

Source: CVE List, as of . About the data.

Weakness

CWE-125

CWE and CAPEC are maintained by MITRE; the entries are those named in the CVE record.

Timeline

DateEvent
CVE record published

References

2

Known exploited Red Hat vulnerabilities

  • CVE-2015-3246: Red Hat Libuser Race Condition Vulnerability (added )
  • CVE-2015-5287: Red Hat Automatic Bug Reporting Tool Privilege Escalation Vulnerability (added )
  • CVE-2018-14667: Red Hat JBoss RichFaces Framework Expression Language Injection Vulnerability (added )
  • CVE-2021-3560: Red Hat Polkit Incorrect Authorization Vulnerability (added )
  • CVE-2021-4034: Red Hat Polkit Out-of-Bounds Read and Write Vulnerability (added )