etcd bbolt Branch Page out-of-bounds

CVSS Meta Temp Score
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Current Exploit Price (≈)
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CTI Interest Score
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3.4$0-$5k0.00

Summaryinfo

A vulnerability described as problematic has been identified in etcd bbolt. Affected is an unknown function of the component Branch Page Handler. Such manipulation leads to out-of-bounds. This vulnerability is referenced as CVE-2026-33817. No exploit is available. Applying a patch is advised to resolve this issue.

Detailsinfo

A vulnerability was found in etcd bbolt (unknown version) and classified as problematic. Affected by this issue is an unknown code block of the component Branch Page Handler. The manipulation with an unknown input leads to a out-of-bounds vulnerability. Using CWE to declare the problem leads to CWE-125. The product reads data past the end, or before the beginning, of the intended buffer. Impacted is confidentiality. CVE summarizes:

Index out-of-range when encountering a branch page with zero elements in go.etcd.io/bbolt

The advisory is shared for download at github.com. This vulnerability is handled as CVE-2026-33817 since 03/23/2026. There are neither technical details nor an exploit publicly available.

The vulnerability scanner Nessus provides a plugin with the ID 312669 (Fedora 43 : forgejo-runner (2026-cf660bc96a)), which helps to determine the existence of the flaw in a target environment.

Applying a patch is able to eliminate this problem. The bugfix is ready for download at github.com.

The vulnerability is also documented in the vulnerability database at Tenable (312669). VulDB is the best source for vulnerability data and more expert information about this specific topic.

Productinfo

Vendor

Name

CPE 2.3info

CPE 2.2info

CVSSv4info

VulDB Vector: 🔒
VulDB Reliability: 🔍

CVSSv3info

VulDB Meta Base Score: 3.5
VulDB Meta Temp Score: 3.4

VulDB Base Score: 3.5
VulDB Temp Score: 3.4
VulDB Vector: 🔒
VulDB Reliability: 🔍

CVSSv2info

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

Exploitinginfo

Class: Out-of-bounds
CWE: CWE-125 / CWE-119
CAPEC: 🔒
ATT&CK: 🔒

Physical: No
Local: No
Remote: Partially

Availability: 🔒
Status: Not defined
Price Prediction: 🔍
Current Price Estimation: 🔒

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Nessus ID: 312669
Nessus Name: Fedora 43 : forgejo-runner (2026-cf660bc96a)

Threat Intelligenceinfo

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

Countermeasuresinfo

Recommended: Patch
Status: 🔍

0-Day Time: 🔒

Patch: github.com

Timelineinfo

03/23/2026 CVE reserved
04/06/2026 +13 days Advisory disclosed
04/06/2026 +0 days VulDB entry created
05/07/2026 +31 days VulDB entry last update

Sourcesinfo

Advisory: 4923
Status: Confirmed

CVE: CVE-2026-33817 (🔒)
GCVE (CVE): GCVE-0-2026-33817
GCVE (VulDB): GCVE-100-355640

Entryinfo

Created: 04/06/2026 21:24
Updated: 05/07/2026 02:30
Changes: 04/06/2026 21:24 (54), 05/07/2026 02:30 (2)
Complete: 🔍
Cache ID: 216::103

VulDB is the best source for vulnerability data and more expert information about this specific topic.

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