Severity by source
AV:N/AC:L/PR:N/UI:N/S:C/C:H/I:H/A:H
Unauthenticated low-complexity network TCP access with no user interaction yields full takeover plus cross-product impact, so PR:N, AC:L, S:C and C/I/A:H.
Primary rating from Vendor (oracle).
CVSS VectorVendor: oracle
Lifecycle Timeline
2DescriptionCVE.org
Vulnerability in the Oracle Coherence product of Oracle Fusion Middleware (component: Core). Supported versions that are affected are 12.2.1.4.0, 14.1.1.0.0, 14.1.2.0.0 and 15.1.1.0.0. Easily exploitable vulnerability allows unauthenticated attacker with network access via TCP to compromise Oracle Coherence. While the vulnerability is in Oracle Coherence, attacks may significantly impact additional products (scope change). Successful attacks of this vulnerability can result in takeover of Oracle Coherence. CVSS 3.1 Base Score 10.0 (Confidentiality, Integrity and Availability impacts). CVSS Vector: (CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:H/I:H/A:H).
AnalysisAI
Complete takeover of Oracle Coherence is achievable by an unauthenticated remote attacker over TCP, with the Core component of this Oracle Fusion Middleware in-memory data grid affected in versions 12.2.1.4.0, 14.1.1.0.0, 14.1.2.0.0 and 15.1.1.0.0. The maximum-severity CVSS 10.0 rating reflects a scope-changing flaw whose exploitation can pivot beyond Coherence to impact other co-deployed products. There is no public exploit identified at time of analysis, but the trivial exploitability and unauthenticated network reach make this a top-priority patch.
Technical ContextAI
Oracle Coherence is a distributed in-memory data grid and caching platform used inside Oracle Fusion Middleware and frequently co-deployed with Oracle WebLogic Server for clustered, low-latency data management. The flaw resides in the product Core and is reachable over TCP, consistent with Coherence's cluster and proxy service listeners that accept remote connections. Oracle assigned no CWE, but the unauthenticated remote takeover profile with scope change is characteristic of unsafe deserialization of untrusted objects on a network-exposed Java service, a recurring root-cause class in Oracle middleware; this class attribution is inferred, not confirmed, given the absent CWE. The single CPE cpe:2.3:a:oracle_corporation:oracle_coherence:*:*:*:*:*:*:*:* confirms Oracle Coherence itself as the affected product.
RemediationAI
Apply the fixes delivered in the Oracle July 2026 Critical Patch Update (patch available per vendor advisory) as documented at https://www.oracle.com/security-alerts/cpujul2026.html, which covers all affected versions 12.2.1.4.0, 14.1.1.0.0, 14.1.2.0.0 and 15.1.1.0.0; map your installed release to its corresponding CPU patch since Oracle does not publish a single fixed-version string in the input. Until patching completes, restrict the Coherence cluster and proxy listener TCP ports with network segmentation and firewall allowlists so only trusted cluster members and application tiers can reach them (trade-off: an overly tight or misconfigured allowlist can break clustering or client connectivity), and ensure no Coherence TCP service is exposed to untrusted or internet-facing networks. Because the input identifies no vendor-sanctioned feature-level workaround, this network isolation is a compensating control, not a replacement for the CPU patch.
More in Oracle Coherence
View allRemote takeover of Oracle Coherence (Fusion Middleware) via the Centralized Third Party Jars component allows an unauthe
Remote takeover of Oracle Coherence is possible via HTTP by an unauthenticated network attacker, affecting Oracle Fusion
Remote takeover of Oracle Coherence (Fusion Middleware component) is possible by unauthenticated network attackers reach
Remote takeover of Oracle Coherence is possible by unauthenticated attackers with HTTP network access to affected Fusion
Remote unauthenticated takeover of Oracle Coherence (Oracle Fusion Middleware) is possible over HTTPS, affecting support
Remote takeover of Oracle Coherence (Fusion Middleware Core component) lets an unauthenticated attacker with TCP network
Remote takeover of Oracle Coherence (the Core component of Oracle Fusion Middleware) allows an unauthenticated attacker
Full takeover of Oracle Coherence (Core component) in Oracle Fusion Middleware versions 14.1.1.0.0, 14.1.2.0.0, and 15.1
Complete takeover of Oracle Coherence (Oracle Fusion Middleware Core component) is achievable by an unauthenticated remo
Full compromise of Oracle Coherence, the in-memory data grid within Oracle Fusion Middleware, is possible over the netwo
Complete takeover of Oracle Coherence is possible when an unauthenticated attacker with TCP network access exploits a Co
Complete compromise of Oracle Coherence (Oracle Fusion Middleware Core component) is possible by unauthenticated remote
Same technique Authentication Bypass
View allShare
External POC / Exploit Code
Leaving vuln.today
EUVD-2026-46623
GHSA-244c-7qjj-mm93