Exploitation timeline
Threadlinqs has recorded 5 anthropics CVEs published between and . The busiest month was 2026-07 (2 new CVEs). None of them is listed in CISA KEV yet.
Most exploited vulnerabilities
Ranked with CISA KEV listings first, then EPSS exploit probability, then CVSS score. Showing 5 of 5 tracked anthropics CVEs.
- CVE-2026-47751medium 5.3EPSS 0.8%
- CVE-2026-55407medium 6.3EPSS 0.8%
- CVE-2025-66032high 8.7EPSS 0.7%
- CVE-2026-25724high 7.5EPSS 0.7%
- CVE-2025-59829low 2.3EPSS 0.4%
Products affected
Threadlinqs normalises CPE and CNA product records across all 5 CVEs; 3 distinct anthropics products are affected. The most frequently affected:
- claude-code 3 CVEs
- buffa 1 CVE
- claude-code-action 1 CVE
Threat activity
4 tracked threat campaigns reference anthropics products or exploit anthropics CVEs:
- Claude Code RCE via Malicious .mcp.json in Pull Request BranchesHIGH
- Claude Code Symlink Flaw in Startup Memory Loader Enables Silent File Exfiltration via CLAUDE.md ImportsMEDIUM
- CVE-2026-55407: Unbounded Heap Allocation DoS in Anthropic's Buffa Rust Protobuf Library (decode_unknown_field)
- Fake Bug Report Prompt Injection Attacks Hijacking AI Coding Agents (Agentjacking)CRITICAL
How to prioritise anthropics patching
This order follows the data Threadlinqs holds for anthropics, not a generic severity checklist:
- No anthropics CVE is in CISA KEV yet, so rank by exploit probability instead.
- Outside KEV, the highest EPSS scores are CVE-2026-47751 (0.8%), CVE-2026-55407 (0.8%), CVE-2025-66032 (0.7%).
- 0 CVEs score Critical and 2 High on CVSS v3 (maximum 8.7, average 6); sequence these after KEV and high-EPSS items.
About this data
Vendor attribution comes from the CNA and CPE product records of each CVE, folded to one vendor name; CVSS, EPSS and KEV status are read from the Threadlinqs CVE catalog; campaign and actor links come from tracked threat records. Counts reflect the data as of 2026-10-10 and refresh daily.