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Public proof of conceptFix available

CVE-2023-43040

IBM Spectrum Fusion HCI improper access control

A public proof of concept exists; no exploitation attested.

  • Published2024-05-14
  • WeaknessCWE-1220

Am I affected?

With a domain, we read the version its public headers and pages expose. A distribution build can carry the fix under an older number.

Description

IBM Spectrum Fusion HCI 2.5.2 through 2.7.2 could allow an attacker to perform unauthorized actions in RGW for Ceph due to improper bucket access. IBM X-Force ID: 266807.

Timeline

dates in UTC
  1. 2024-05-1413:46CVE publishedNVD

Observed activity

isMalicious corpus · updated 2026-10-23 15:37 UTC
Indicators tagged with this CVE, per day0 indicators over 7 days
Block these indicators
  • Firewall list (EDL, text): https://api.ismalicious.com/edl/cve/CVE-2023-43040?format=txt
  • CSV export: https://api.ismalicious.com/edl/cve/CVE-2023-43040?format=csv
  • TAXII collection of exploited CVEs
  • The EDL and CSV take an API key on the Pro plan.

Versions per branch

CISA-ADP · NVD
Ibm spectrum fusion hci
BranchAffectedFixed in
2.5= 2.5.2no fix published
Ibm storage fusion hci
BranchAffectedFixed in
2.x≥ 2.5.2, < 2.8.02.8.0

as publishedRanges as NVD and OSV publish them; a distribution’s build can be fixed under an older number.

Distribution builds and vendor advisories

Packages from OSV.dev and products from the vendors' CSAF advisories.

version not verifiedVersions not verified: read as OSV.dev and the vendors publish them, not checked against each vendor's release list.

Vendor advisories

  • CVE-2023-43040 Red Hat Product Security784 products fixed · 4 known affected

    rgw: improperly verified POST keys

    librgw2 as a component of Red Hat Ceph Storage 3 · librgw2 as a component of Red Hat Ceph Storage 4 · librgw2.src as a component of Red Hat Openshift Container Storage 4 · +1 more

  • RHSA-2024:0745 Red Hat Product Security629 products fixed

    Red Hat Security Advisory: Red Hat Ceph Storage 5.3 Security update

  • RHSA-2023:5693 Red Hat Product Security18 products fixed

    Red Hat Security Advisory: Red Hat Ceph Storage 6.1 security, enhancement, and bug fix update

Full record on NVD

Fix

  1. Vendor fix Red Hat Product Security RHSA-2024:0745 · 629 productsBefore applying this update, make sure all previously released errata relevant to your system have been applied. For details on how to apply this update, refer to: https://access.redhat.com/documentation/en-us/red_hat_ceph_storage/5/html-single/upgrade_guide/index#upgrade-a-red-hat-ceph-storage-c…
  2. Vendor fix Red Hat Product Security RHSA-2023:5693 · 18 productsBefore applying this update, make sure all previously released errata relevant to your system have been applied. For details on how to apply this update, refer to: https://access.redhat.com/articles/2789521 and https://access.redhat.com/documentation/en-us/red_hat_ceph_storage/6 For supported …
  3. No fix available, says the vendor Red Hat Product Security CVE-2023-43040 · 1 productAffected
  4. No fix planned, says the vendor Red Hat Product Security CVE-2023-43040 · 1 productOut of support scope
  5. No fix planned, says the vendor Red Hat Product Security CVE-2023-43040 · 2 productsWill not fix

Advisories and patches

Detection

Nuclei template
none so far
ProjectDiscovery
Exploit-DB
no entry
Exploit-DB
Proof-of-concept repositories
1 repository, unverifiedriza/CVE-2023-43040
PoC-in-GitHub

Sources

Technical details

CVSS v3 Vector
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
Published
2024-05-14
Last Modified
2026-06-17
NVD status
Modified

Frequently asked questions

What is CVE-2023-43040?

IBM Spectrum Fusion HCI 2.5.2 through 2.7.2 could allow an attacker to perform unauthorized actions in RGW for Ceph due to improper bucket access. IBM X-Force ID: 266807.

Is CVE-2023-43040 actively exploited?

Active exploitation of CVE-2023-43040 has not been confirmed. Its EPSS score was 3.1% on 2026-10-22, the estimated probability of exploitation in the next 30 days.

What is the CVSS score for CVE-2023-43040?

CVE-2023-43040 has a CVSS v3 base score of 9.8 (CRITICAL severity), with vector string CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H.

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