Stack consumption vulnerability in libxml2 2.5.10, 2.6.16, 2.6.26, 2.6.27, and 2.6.32, and libxml 1.8.17, allows context-dependent attackers to cause a denial of service (application crash) via a large depth of element declarations in a DTD, related to a function recursion, as demonstrated by the Codenomicon XML fuzzing framework.
Conclusion & alert: CVE-2009-2414 is rated Moderate Risk (45.2/100): CVSS Medium severity, with medium exploitation likelihood (EPSS 1.29%). Mandatory action: Review affected assets and schedule remediation.
Risk is dynamic; we continuously reassess and refresh what is shown on this page as upstream context changes.
EPSS lead: Daily EPSS estimates relative likelihood of exploitation; percentile ranks this CVE among scored vulnerabilities (higher = more severe relative rank).
| # | Date | Old EPSS score | New EPSS score | Delta (New - Old) |
|---|---|---|---|---|
| 1 | 2026-05-12 | 1.20% | 1.29% | +0.09% |
| 2 | 2026-05-11 | 1.41% | 1.20% | -0.21% |
| 3 | 2025-08-30 | — | 1.41% | — |
Full EPSS history (8 records total)
CVSS metrics for this CVE.
| Base score | Version | Severity | Vector | Exploitability | Impact | Score source |
|---|---|---|---|---|---|---|
| 4.3 | 2.0 | MEDIUM |
|
8.6 | 2.9 | [email protected] |
| vendor | priority | summary | link |
|---|---|---|---|
debian
|
medium | CVE-2009-2414 medium priority: Debian including 1 source packages (libxml2), 5 status rows across 5 suites (bookworm, bullseye, forky, sid, trixie): resolved 5. | https://security-tracker.debian.org/tracker/CVE-2009-2414 |
gentoo
|
normal | CVE-2009-2414: 1 GLSA(s) (201009-07), 1 atom(s) (dev-libs/libxml2); latest impact normal. | https://bugs.gentoo.org/buglist.cgi?quicksearch=CVE-2009-2414 |
redhat
|
medium | — | https://access.redhat.com/security/cve/CVE-2009-2414 |
ubuntu
|
medium | CVE-2009-2414 medium priority: Ubuntu including 2 source packages (libxml, libxml2), 14 status rows across 7 suites (dapper, hardy, intrepid, jaunty, karmic, lucid, upstream): released 6, DNE 4, not-affected 2, ignored 1, needs-triage 1. | https://ubuntu.com/security/CVE-2009-2414 |
| Vendor | Product | Version | Raw CPE |
|---|---|---|---|
| xmlsoft | libxml | 1.8.17 | cpe:2.3:a:xmlsoft:libxml:1.8.17:*:*:*:*:*:*:* |
| xmlsoft | libxml2 | 2.5.10 | cpe:2.3:a:xmlsoft:libxml2:2.5.10:*:*:*:*:*:*:* |
| xmlsoft | libxml2 | 2.6.16 | cpe:2.3:a:xmlsoft:libxml2:2.6.16:*:*:*:*:*:*:* |
| xmlsoft | libxml2 | 2.6.26 | cpe:2.3:a:xmlsoft:libxml2:2.6.26:*:*:*:*:*:*:* |
| xmlsoft | libxml2 | 2.6.27 | cpe:2.3:a:xmlsoft:libxml2:2.6.27:*:*:*:*:*:*:* |
| xmlsoft | libxml2 | 2.6.32 | cpe:2.3:a:xmlsoft:libxml2:2.6.32:*:*:*:*:*:*:* |