CVE-2026-33817 | etcd bbolt Branch Page out-of-bounds (ID 4923)

VDB-355640 · CVE-2026-33817 · ID 4923 ETCD BBOLT BRANCH PAGE OUT-OF-BOUNDS HISTORYDIFFRELATEJSONXMLCTI CVSS Meta Temp Score Current Exploit Price (≈) CTI Interest Score 3.4 $0-$5k 0.71+ 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. Applying a patch is able to eliminate this problem. The bugfix is ready for download at github.com. Productinfo Vendor etcd Name bbolt 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 Vector Complexity Authentication Confidentiality Integrity Availability Unlock Unlock Unlock Unlock Unlock Unlock Unlock Unlock Unlock Unlock Unlock Unlock Unlock Unlock Unlock Unlock Unlock Unlock 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: 🔒 0-Day Unlock Unlock Unlock Unlock Today Unlock Unlock Unlock Unlock 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 04/06/2026 +0 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 Changes: 04/06/2026 21:24 (54) Complete: 🔍 Cache ID: 99:B74:101 Discussion No comments yet. Languages: en. Please log in to comment. ◂ PreviousOverviewNext ▸