🛡️ CVE-2025-43992 — elastic-cloud-storage

How this vulnerability can be exploited

This issue can be reached over the network, attack complexity is high, an attacker needs no privileges on the target. No user interaction is required. The scope is unchanged, so the impact stays within the vulnerable component. Rated impact: confidentiality low, integrity low, availability low.

CVSS metrics in full

The score comes from this vector: CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:L/I:L/A:L

• Attack vector: Network — reachable from anywhere that can route to the service.
• Attack complexity: High — the attacker first has to win a race, learn a secret or otherwise prepare the target.
• Privileges required: None — an unauthenticated stranger can try it.
• User interaction: None — nobody has to be tricked into anything.
• Scope: Unchanged — the damage stays inside the vulnerable component.
• Confidentiality impact: Low — limited, and the attacker does not choose what is affected.
• Integrity impact: Low — limited, and the attacker does not choose what is affected.
• Availability impact: Low — limited, and the attacker does not choose what is affected.

Weakness class

CVE-2025-43992 is classified as CWE-302: Authentication Bypass by Assumed-Immutable Data. The authentication scheme or implementation uses key data elements that are assumed to be immutable, but can be controlled or modified by the attacker.

Affected software

CVE-2025-43992 is recorded against 2 packages.

• elastic-cloud-storage (from 3.8.1.0 up to 4.3.0.0)
• objectscale (fixed in 4.3.0.0)

Timeline and source

Published on 11 May 2026 and last revised on 17 June 2026. No public exploit is currently recorded for this entry. Record sourced from NVD.

References

www.dell.com

Other advisories for this package

elastic-cloud-storage has other advisories on record. If you are patching this one, these are worth checking on the same host:

• CVE-2022-31231 (5.9 Medium, published 22 May 2026)
• CVE-2026-26946 (6.7 Medium, published 11 May 2026)
• CVE-2026-40636 (9.8 Critical, published 11 May 2026)
• CVE-2026-35157 (5.8 Medium, published 11 May 2026)
• CVE-2026-28261 (7.8 High, published 8 Apr 2026)
• CVE-2026-22271 (7.5 High, published 23 Jan 2026)
• CVE-2026-22276 (5.5 Medium, published 23 Jan 2026)
• CVE-2026-22275 (4.4 Medium, published 23 Jan 2026)

Same weakness in other software

These advisories are the same class of weakness (CWE-302: Authentication Bypass by Assumed-Immutable Data) in other software:

• CVE-2026-5423 (published 6 Aug 2026)
• CVE-2026-47303 (8.0 High, published 21 Jul 2026)
• CVE-2026-50528 (8.2 High, published 20 Jul 2026)
• CVE-2026-39429 (8.2 High, published 25 Jun 2026)
• CVE-2026-48781 (9.9 Critical, published 17 Jun 2026)
• CVE-2026-34460 (5.4 Medium, published 2 Jun 2026)
• CVE-2026-28510 (5.9 Medium, published 5 May 2026)
• CVE-2026-27840 (4.3 Medium, published 10 Mar 2026)

Details

Affected Packages

References