CVE-2012-5568 — Apache Tomcat through 7.0.x allows remote attackers to cause a denial of service (daemon…

Triage

Is it exploited, how likely is exploitation, what does it touch, and how severe do the sources call it.

CISA SSVC assessment CISA

Three decision points CISA publishes for the CVEs it assesses (SSVC 2.0.3). A stakeholder decision, not a severity score.

Remediation

Fixes and mitigations documented by the sources — linked to the original advisory.

No fix documented by the sources we poll. That does not mean none exists: check the vendor advisory.

First 24 hours

Ordered from the record’s own fields — exposure first, because you cannot patch what you have not found. A rule-generated starting point.

1. Identify exposed assets running the affected vendor/product/version combinations (Apache Software Foundation Tomcat, Opensuse Opensuse).
2. The attack is network-based and needs no privileges: restrict exposure (ACLs, VPN, WAF) until patched.
3. No fix documented in the sources: reduce exposure and monitor the vendor advisory.
4. EPSS ahead of 95% of scored CVEs: prioritize it in the patch queue.
5. Search available logs for exploit probes, errors and authentication anomalies.

Affected scope

Vendor, product and versions as the sources word them.

Attack characteristics

The CVSS vector, decoded. It describes the attack, not your exposure to it.

Every base score collected

Sources score independently and may disagree; each row says who scored it and under which version.

EPSS over time FIRST

Oct 13, 2026 → Oct 15, 2026 · 3 reading(s) · max 9.59%

Detection

Read off the CVSS vector and the weakness class. Starting points, not tested rules.

• Prioritize edge telemetry for the network-reachable component (proxy, WAF, IDS/IPS).

Timeline

What happened to this CVE, newest first.

• 2026
• SSVC assessment updated
  Oct 13, 2026 · CVE Program (cve.org) e CISA ADP
• Record published
  Oct 13, 2026
• CVSS changed · 5.0
  Oct 13, 2026 · NIST National Vulnerability Database
• Source status changed · → Modified
  Oct 13, 2026 · NIST National Vulnerability Database
• Record created in this database
  Oct 13, 2026 · NIST National Vulnerability Database
• 2012
• CVE published
  Nov 30, 2012 · redhat

Source activity

Repeated readings are counted rather than listed.

• 1× Official description updated · Oct 13, 2026 – Oct 13, 2026

References

10 on the record

• tomcat.10.n6.nabble.com/How-does-Tomcat-handle-a-slow-HTTP-DoS-tc2147776.html
  Vendor Advisory, mailing-list, x_refsource_MLIST, NIST National Vulnerability Database
• tomcat.10.n6.nabble.com/How-does-Tomcat-handle-a-slow-HTTP-DoS-tc2147779.html
  Vendor Advisory, mailing-list, x_refsource_MLIST, NIST National Vulnerability Database
• bugzilla.redhat.com/show_bug.cgi
  Issue Tracking, Third Party Advisory, x_refsource_CONFIRM, NIST National Vulnerability Database
• lists.opensuse.org/opensuse-updates/2013-01/msg00037.html
  Mailing List, Third Party Advisory, vendor-advisory, x_refsource_SUSE, NIST National Vulnerability Database
• www.securityfocus.com/bid/56686
  Third Party Advisory, VDB Entry, vdb-entry, x_refsource_BID, NIST National Vulnerability Database
• exchange.xforce.ibmcloud.com/vulnerabilities/80317
  Third Party Advisory, VDB Entry, vdb-entry, x_refsource_XF, NIST National Vulnerability Database
• lists.opensuse.org/opensuse-updates/2012-12/msg00089.html
  Mailing List, Third Party Advisory, vendor-advisory, x_refsource_SUSE, NIST National Vulnerability Database
• lists.opensuse.org/opensuse-updates/2012-12/msg00090.html
  Mailing List, Third Party Advisory, vendor-advisory, x_refsource_SUSE, NIST National Vulnerability Database
• openwall.com/lists/oss-security/2012/11/26/2
  Mailing List, Third Party Advisory, mailing-list, x_refsource_MLIST, NIST National Vulnerability Database
• captainholly.wordpress.com/2009/06/19/slowloris-vs-tomcat/
  Exploit, Third Party Advisory, x_refsource_MISC, NIST National Vulnerability Database

Elsewhere on this site

Related CVEs (same products)

• High CVE-2026-87022 Apache Tomcat: WebSocket message smuggling with per-message-deflate 22d
• Critical CVE-2026-86350 Apache Tomcat: Regression in fix for CVE-2026-41293 can trigger request header mix-up 22d
• Critical CVE-2026-86248 Apache Tomcat: Fix for CVE-2026-34500 was incomplete. OCSP checks sometimes soft-fail with FFM even when soft-fail is disabled 22d
• High CVE-2026-78437 Apache Tomcat: HTTP/2 DoS via malformed request 22d
• High CVE-2026-78383 Apache Tomcat: AJP DoS via missing request body 22d
• High CVE-2026-79677 Apache Tomcat: WebSocket DoS due to lost asynchronous write timeout 22d

Not in any source we poll

Listed rather than left blank: an empty field and an unmeasured one look identical on screen, and only one is a reason to look elsewhere.

• No fixed version, patch or mitigation documented.
• No CWE classification.
• No confirmed IOCs, IP addresses, domains, file hashes, or malware artifacts supplied.
• No organization-specific asset inventory, compensating-control status, or patch deployment evidence supplied.
• No exploit packet captures, log samples, or incident case IDs supplied.

Answered from this record

Text assembled only from the fields above — no additional claims.

What should defenders know first?

CVE-2012-5568 is "Apache Tomcat through 7.0.x allows remote attackers to cause a denial of service (daemon…", rated Medium. It affects Tomcat (Apache Software Foundation); versions are in the scope table. It is not in CISA KEV, which does not rule out exploitation. CVSS 5.0 describes technical severity. EPSS 9.59% estimates the probability of exploitation in 30 days; neither replaces your asset context. First verify whether exposed or business-critical assets run the affected versions, apply vendor fixes or mitigations, and preserve logs for review.

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