CVE-2026-73499
Vulnerability Scoring
Analysis In Progress
CVE-2026-73499 Vulnerability Analysis & Exploit Details
CVE-2026-73499
Attack Complexity Details
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Attack Complexity:
Attack Complexity Analysis In Progress
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Attack Vector:
Attack Vector Under Analysis
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Privileges Required:
None
No authentication is required for exploitation.
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Scope:
Impact is confined to the initially vulnerable component.
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User Interaction:
None
No user interaction is necessary for exploitation.
CVE-2026-73499 Details
Status: Received on 12 Aug 2026, 22:17 UTC
Published on: 12 Aug 2026, 22:17 UTC
CVSS Release:
CVE-2026-73499 Vulnerability Summary
CVE-2026-73499: etcd is a distributed key-value store for the data of a distributed system. Prior to versions 3.5.33, 3.6.14, and 3.7.1, a user granted READ permission on a single exact key can use the Watch gRPC API with clientv3.WithFromKey() to receive watch events for every key lexicographically greater than or equal to the permitted key. In server/etcdserver/api/v3rpc/watch.go, the open-ended RangeEnd sentinel is rewritten before the RBAC permission check in server/auth/range_perm_cache.go function isRangeOpPermitted, causing the request to be treated as an exact-key watch. Range/Get and DeleteRange requests are not affected, and the issue affects only clusters with authentication enabled. This issue is fixed in versions 3.5.33, 3.6.14, and 3.7.1.
Assessing the Risk of CVE-2026-73499
Access Complexity Graph
The exploitability of CVE-2026-73499 depends on two key factors: attack complexity (the level of effort required to execute an exploit) and privileges required (the access level an attacker needs).
Exploitability Analysis for CVE-2026-73499
No exploitability data is available for CVE-2026-73499.
Understanding AC and PR
A lower complexity and fewer privilege requirements make exploitation easier. Security teams should evaluate these aspects to determine the urgency of mitigation strategies, such as patch management and access control policies.
Attack Complexity (AC) measures the difficulty in executing an exploit. A high AC means that specific conditions must be met, making an attack more challenging, while a low AC means the vulnerability can be exploited with minimal effort.
Privileges Required (PR) determine the level of system access necessary for an attack. Vulnerabilities requiring no privileges are more accessible to attackers, whereas high privilege requirements limit exploitation to authorized users with elevated access.
CVSS Score Breakdown Chart
Above is the CVSS Sub-score Breakdown for CVE-2026-73499, illustrating how Base, Impact, and Exploitability factors combine to form the overall severity rating. A higher sub-score typically indicates a more severe or easier-to-exploit vulnerability.
CIA Impact Analysis
Below is the Impact Analysis for CVE-2026-73499, showing how Confidentiality, Integrity, and Availability might be affected if the vulnerability is exploited. Higher values usually signal greater potential damage.
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Confidentiality:
None
CVE-2026-73499 does not compromise confidentiality.
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Integrity:
None
CVE-2026-73499 does not impact data integrity.
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Availability:
None
CVE-2026-73499 does not affect system availability.
CVE-2026-73499 References
External References
- https://github.com/etcd-io/etcd/commit/6643f80602461a6095c9b294b6512fd9719bef41
- https://github.com/etcd-io/etcd/commit/7cf71ec9e2ec54230a5454392fa4ffd4574b41ed
- https://github.com/etcd-io/etcd/commit/afeaa624da19085b47fb5ccc7c22a8c421bc2eae
- https://github.com/etcd-io/etcd/commit/e863b001bbf3367003a543aa3099db9892134cd7
- https://github.com/etcd-io/etcd/releases/tag/v3.5.33
- https://github.com/etcd-io/etcd/releases/tag/v3.6.14
- https://github.com/etcd-io/etcd/releases/tag/v3.7.1
- https://github.com/etcd-io/etcd/security/advisories/GHSA-xg4h-6gfc-h4m8
CWE Common Weakness Enumeration
CWE-863Protect Your Infrastructure against CVE-2026-73499: Combat Critical CVE Threats
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