Tomcat CVE Roundup: 3 New Vulnerabilities You Can’t Ignore

Three fresh Apache Tomcat vulnerabilities just dropped—each with its own set of concerns.

Together, these flaws (CVE-2025-55752, CVE-2025-55754, and CVE-2025-61795) show how even mature, production-proven frameworks can be vulnerable to data exposure, command execution, or denial-of-service risk.

If your Tomcat instances are still on version 8.5.x, you’re already outside community-supported ranges. That means no new fixes—and no protection unless you have Never-Ending Support (NES) for Tomcat in place.

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1. Path Traversal: Exploiting Rewrite Rules (CVE-2025-55752)

This regression slipped through during a bugfix and introduced a classic Path Traversal flaw.

By manipulating how Tomcat normalizes rewritten URLs, attackers can access restricted directories like /WEB-INF/ or /META-INF/—and in edge cases with PUT enabled, even upload malicious files that may then be used to achieve full RCE (Remote Code Execution).

Impact: Unauthorized file access or potential remote code execution
Fix: Upgrade to a patched version of Apache Tomcat or NES for Tomcat (patched October 2025)

Why it matters: This CVE highlights how minor refactors in rewrite handling can ripple into full-blown access control bypasses—especially for large enterprise deployments using custom URL rewrites.

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2. Command Injection on Windows (CVE-2025-55754)

Tomcat failed to neutralize ANSI escape sequences in log output. On Windows consoles that support color codes, crafted URLs could inject commands or overwrite clipboard data—a social-engineering vector disguised as harmless logging.

Impact: Potential command execution through manipulated admin consoles
Fix: Upgrade to a patched version of Apache Tomcat or NES for Tomcat (patched October 2025)

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Why it matters: Even experienced administrators can be tricked when log output itself becomes weaponized. It’s a reminder that defense-in-depth has to include the visibility layer, not just runtime.

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3. Denial of Service Through Multipart Uploads (CVE-2025-61795)

Failed multipart uploads leave temporary files behind faster than the JVM garbage collector can clean them. Multiply that across hundreds or thousands of requests and you get a disk-level DoS waiting to happen.

Impact: Resource exhaustion, system downtime, potential SLA violations
Fix: Upgrade to a patched version of Apache Tomcat or NES for Tomcat (October 2025)

Why it matters: This vulnerability targets the unglamorous side of performance—how Tomcat handles cleanup under stress. For regulated environments, downtime equals compliance failure.

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The Bigger Picture

While each CVE is unique, together they expose a pattern:

Tomcat’s older code paths are brittle under modern workloads—URL rewrites, colored logging, multipart uploads—all behavior that newer cloud platforms handle differently.

The Apache Software Foundation continues to support only the most recent major versions, leaving enterprise users with years-old dependencies and no safe upgrade path.

That’s where HeroDevs Never-Ending Support (NES) steps in.

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What NES for Tomcat Delivers

• Verified CVE remediations for EOL Tomcat versions
  
  
• Drop-in patched binaries with zero refactoring
  
  
• Continuous upstream monitoring for emerging exploits
  
  
• Compliance-grade update documentation (SOC 2, PCI DSS, HIPAA, FedRAMP)
  
  
• Predictable cost structure vs. emergency refactors
  
  

With NES for Tomcat, enterprises keep their applications secure and compliant—without breaking production or rushing migrations.

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Take Action

If your Tomcat version falls in the vulnerable ranges, your servers are already at risk.

HeroDevs provides immediate, tested, drop-in builds that remediate all three October 2025 CVEs—plus continuous patching for new threats.

Get Remediation from HeroDevs NES for Tomcat

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