inftrees.h in zlib 1.2.2 allows remote attackers to cause a denial of service (application crash) via an invalid file that causes a large dynamic tree to be produced.
Conclusion & alert: CVE-2005-1849 is rated Moderate Risk (47.2/100): CVSS Medium severity, with medium exploitation likelihood (EPSS 4.00%). 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 | 2026-06-15 | 7.99% | 4.00% | -3.99% |
| 2 | 2026-01-12 | 7.89% | 7.99% | +0.10% |
| 3 | 2026-01-11 | — | 7.89% | — |
Full EPSS history (17 records total)
CVSS metrics for this CVE.
| Base score | Version | Severity | Vector | Exploitability | Impact | Score source |
|---|---|---|---|---|---|---|
| 5.0 | 2.0 | MEDIUM |
|
10.0 | 2.9 | [email protected] |
| vendor | priority | summary | link |
|---|---|---|---|
debian
|
low | CVE-2005-1849 low priority: Debian including 3 source packages (sash, zlib, zsync), 15 status rows across 5 suites (bookworm, bullseye, forky, sid, trixie): resolved 15. | https://security-tracker.debian.org/tracker/CVE-2005-1849 |
gentoo
|
normal | CVE-2005-1849: 1 GLSA(s) (200603-18), 1 atom(s) (media-gfx/pngcrush); latest impact normal. | https://bugs.gentoo.org/buglist.cgi?quicksearch=CVE-2005-1849 |
redhat
|
high | — | https://access.redhat.com/security/cve/CVE-2005-1849 |
ubuntu
|
medium | CVE-2005-1849 medium priority: Ubuntu including 6 source packages (aide, dpkg, ia32-libs, rpm, sash, zlib), 24 status rows across 4 suites (dapper, edgy, feisty, upstream): not-affected 12, needs-triage 6, released 6. | https://ubuntu.com/security/CVE-2005-1849 |