nbdkit Server off-by-one

CVSS Meta Temp Score
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Current Exploit Price (≈)
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CTI Interest Score
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5.5$0-$5k0.00

Summaryinfo

A vulnerability classified as problematic was found in nbdkit Server. This issue affects some unknown processing. Such manipulation leads to off-by-one. This vulnerability is listed as CVE-2025-47711. There is no available exploit.

Detailsinfo

A vulnerability, which was classified as problematic, has been found in nbdkit Server (version unknown). Affected by this issue is an unknown function. The manipulation with an unknown input leads to a off-by-one vulnerability. Using CWE to declare the problem leads to CWE-193. A product calculates or uses an incorrect maximum or minimum value that is 1 more, or 1 less, than the correct value. Impacted is availability. CVE summarizes:

There's a flaw in the nbdkit server when handling responses from its plugins regarding the status of data blocks. If a client makes a specific request for a very large data range, and a plugin responds with an even larger single block, the nbdkit server can encounter a critical internal error, leading to a denial-of-service.

The advisory is available at bugzilla.redhat.com. This vulnerability is handled as CVE-2025-47711 since 05/07/2025. The exploitation is known to be easy. The technical details are unknown and an exploit is not available.

The vulnerability scanner Nessus provides a plugin with the ID 240796 (SUSE SLES15 / openSUSE 15 Security Update : nbdkit (SUSE-SU-2025:01889-1)), which helps to determine the existence of the flaw in a target environment.

There is no information about possible countermeasures known. It may be suggested to replace the affected object with an alternative product.

The vulnerability is also documented in the databases at Tenable (240796) and EUVD (EUVD-2025-17431). If you want to get best quality of vulnerability data, you may have to visit VulDB.

Productinfo

Vendor

Name

CPE 2.3info

CPE 2.2info

CVSSv4info

VulDB Vector: 🔍
VulDB Reliability: 🔍

CVSSv3info

VulDB Meta Base Score: 5.5
VulDB Meta Temp Score: 5.5

VulDB Base Score: 3.5
VulDB Temp Score: 3.5
VulDB Vector: 🔍
VulDB Reliability: 🔍

NVD Base Score: 6.5
NVD Vector: 🔍

CNA Base Score: 6.5
CNA Vector: 🔍

CVSSv2info

AVACAuCIA
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VectorComplexityAuthenticationConfidentialityIntegrityAvailability
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VulDB Base Score: 🔍
VulDB Temp Score: 🔍
VulDB Reliability: 🔍

Exploitinginfo

Class: Off-by-one
CWE: CWE-193 / CWE-189
CAPEC: 🔍
ATT&CK: 🔍

Physical: No
Local: No
Remote: Yes

Availability: 🔍
Status: Not defined

EPSS Score: 🔍
EPSS Percentile: 🔍

Price Prediction: 🔍
Current Price Estimation: 🔍

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Nessus ID: 240796
Nessus Name: SUSE SLES15 / openSUSE 15 Security Update : nbdkit (SUSE-SU-2025:01889-1)

Threat Intelligenceinfo

Interest: 🔍
Active Actors: 🔍
Active APT Groups: 🔍

Countermeasuresinfo

Recommended: no mitigation known
Status: 🔍

0-Day Time: 🔍

Timelineinfo

05/07/2025 🔍
05/12/2025 +5 days 🔍
05/12/2025 +0 days 🔍
01/08/2026 +241 days 🔍

Sourcesinfo

Advisory: bugzilla.redhat.com
Status: Not defined

CVE: CVE-2025-47711 (🔍)
GCVE (CVE): GCVE-0-2025-47711
GCVE (VulDB): GCVE-100-308378
EUVD: 🔍

Entryinfo

Created: 05/12/2025 22:54
Updated: 01/08/2026 05:38
Changes: 05/12/2025 22:54 (49), 06/09/2025 09:07 (12), 06/09/2025 10:02 (1), 06/28/2025 02:29 (2), 01/08/2026 05:38 (14)
Complete: 🔍
Cache ID: 216::103

If you want to get best quality of vulnerability data, you may have to visit VulDB.

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