The EPSS-CVSS tension in CVE-2026-65810 (7.8 CVSS, 0.00351 EPSS) is real but easily misinterpreted. A path traversal enabling local privilege escalation in .NET Framework is not a mass-exploitation candidate—it requires an attacker to already have local shell access or a separate initial access vector. The low EPSS reflects this structural reality, not false comfort. Treat this vulnerability as a second-stage asset in your threat model: it rarely provides the initial foothold, but once an attacker is already on the box, it frequently becomes the bridge to SYSTEM or root.
The .NET Framework attack surface deserves scrutiny precisely because it's neglected. Organizations treat these workloads as stable infrastructure rather than active attack surface, creating a predictable failure mode: built by teams that no longer exist, maintained by people who didn't write them, running on infrastructure nobody wants to touch. When a CVE drops, the analyst raises an alert—but the person responsible for patching faces a codebase with no test coverage, no clear ownership, and no mechanism to know what might break.
Here's what elevates this beyond a standard prioritization exercise: deprecated codebases accumulate entropy. CVE-2026-65810 is almost certainly not the only exploitable flaw in the affected component—it's the one that got caught. Once an attacker achieves unprivileged local access through phishing, credential stuffing, or a separate RCE, they systematically enumerate privilege escalation paths on forgotten hosts like this one. The EPSS doesn't capture this secondary discovery pattern.
The real risk isn't likelihood of exploitation—it's remediation timeline. For actively maintained code, disclosure-to-patch might be days. For .NET Framework workloads embedded in enterprise infrastructure, that window stretches to quarters because applying the patch requires regression-testing every application loading assemblies from the affected component path. The attack surface isn't static during this window—it grows as sibling vulnerabilities go unpatched and attackers observe how slowly enterprises remediate these CVEs. Prioritize containment planning now; the patch will arrive eventually, but the exploit may not wait for it.