CVE-2014-3609

HttpHdrRange.cc in Squid 3.x before 3.3.12 and 3.4.x before 3.4.6 allows remote attackers to cause a denial of service (crash) via a request with crafted "Range headers with unidentifiable byte-range values."

Published: 2014-09-11 Last update: 2026-05-06 Assigner: [email protected] Source: [email protected]
NVD Status：Modified，CVE State: published
View at NVD, CVE.org, EUVD

CVE-2014-3609 is rated Moderate Risk (59.7/100): CVSS Medium severity, with high exploitation likelihood (EPSS 82.85%, 99th percentile). EPSS ranks this CVE among the most likely to be exploited in the near term. EPSS rose +7.11% over the last day, indicating growing attacker interest. High exploitation likelihood—assess exposure and prioritize remediation.

Risk is dynamic; we continuously reassess and refresh what is shown on this page as upstream context changes.

Exploit prediction scoring system (EPSS) score for CVE-2014-3609

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 2025-12-28 75.74% 82.85% +7.11%
2 2025-12-27 82.85% 75.74% -7.11%
3 2025-10-28 — 82.85% —

Full EPSS history (17 records total)

Common vulnerability scoring system (CVSS) metrics for CVE-2014-3609

CVSS metrics for this CVE.

Base score Version Severity Vector Exploitability Impact Score source
5.0 2.0 MEDIUM
AV:N/AC:L/Au:N/C:N/I:N/A:P Click to expand
Access vector (AV:N)
Can be exploited remotely over network reachability.
Access complexity (AC:L)
Exploitation conditions are straightforward and predictable.
Authentication (AU:N)
No authentication is required.
Confidentiality impact (C:N)
No confidentiality impact.
Integrity impact (I:N)
No integrity impact.
Availability impact (A:P)
Partial availability impact.
 10.0 2.9 [email protected]

Weakness enumeration for CVE-2014-3609

OS Trackers for CVE-2014-3609

vendor priority summary link
debian not yet assigned CVE-2014-3609 not yet assigned priority: Debian including 1 source packages (squid), 5 status rows across 5 suites (bookworm, bullseye, forky, sid, trixie): resolved 5. https://security-tracker.debian.org/tracker/CVE-2014-3609
redhat high — https://access.redhat.com/security/cve/CVE-2014-3609
ubuntu medium CVE-2014-3609 medium priority: Ubuntu including 1 source packages (squid3), 4 status rows across 4 suites (lucid, precise, trusty, upstream): released 2, ignored 1, needs-triage 1. https://ubuntu.com/security/CVE-2014-3609

Affected software / configurations for CVE-2014-3609

Vendor Product Version Raw CPE
squid-cache squid 3.1 cpe:2.3:a:squid-cache:squid:3.1:*:*:*:*:*:*:*
squid-cache squid 3.1.0.1 cpe:2.3:a:squid-cache:squid:3.1.0.1:*:*:*:*:*:*:*
squid-cache squid 3.1.0.2 cpe:2.3:a:squid-cache:squid:3.1.0.2:*:*:*:*:*:*:*
squid-cache squid 3.1.0.3 cpe:2.3:a:squid-cache:squid:3.1.0.3:*:*:*:*:*:*:*
squid-cache squid 3.1.0.4 cpe:2.3:a:squid-cache:squid:3.1.0.4:*:*:*:*:*:*:*
squid-cache squid 3.1.0.5 cpe:2.3:a:squid-cache:squid:3.1.0.5:*:*:*:*:*:*:*
squid-cache squid 3.1.0.6 cpe:2.3:a:squid-cache:squid:3.1.0.6:*:*:*:*:*:*:*
squid-cache squid 3.1.0.7 cpe:2.3:a:squid-cache:squid:3.1.0.7:*:*:*:*:*:*:*
squid-cache squid 3.1.0.8 cpe:2.3:a:squid-cache:squid:3.1.0.8:*:*:*:*:*:*:*
squid-cache squid 3.1.0.9 cpe:2.3:a:squid-cache:squid:3.1.0.9:*:*:*:*:*:*:*
squid-cache squid 3.1.0.10 cpe:2.3:a:squid-cache:squid:3.1.0.10:*:*:*:*:*:*:*
squid-cache squid 3.1.0.11 cpe:2.3:a:squid-cache:squid:3.1.0.11:*:*:*:*:*:*:*
squid-cache squid 3.1.0.12 cpe:2.3:a:squid-cache:squid:3.1.0.12:*:*:*:*:*:*:*
squid-cache squid 3.1.0.13 cpe:2.3:a:squid-cache:squid:3.1.0.13:*:*:*:*:*:*:*
squid-cache squid 3.1.0.14 cpe:2.3:a:squid-cache:squid:3.1.0.14:*:*:*:*:*:*:*
squid-cache squid 3.1.0.15 cpe:2.3:a:squid-cache:squid:3.1.0.15:*:*:*:*:*:*:*
squid-cache squid 3.1.0.16 cpe:2.3:a:squid-cache:squid:3.1.0.16:*:*:*:*:*:*:*
squid-cache squid 3.1.0.17 cpe:2.3:a:squid-cache:squid:3.1.0.17:*:*:*:*:*:*:*
squid-cache squid 3.1.0.18 cpe:2.3:a:squid-cache:squid:3.1.0.18:*:*:*:*:*:*:*
squid-cache squid 3.1.1 cpe:2.3:a:squid-cache:squid:3.1.1:*:*:*:*:*:*:*
squid-cache squid 3.1.2 cpe:2.3:a:squid-cache:squid:3.1.2:*:*:*:*:*:*:*
squid-cache squid 3.1.3 cpe:2.3:a:squid-cache:squid:3.1.3:*:*:*:*:*:*:*
squid-cache squid 3.1.4 cpe:2.3:a:squid-cache:squid:3.1.4:*:*:*:*:*:*:*
squid-cache squid 3.1.5 cpe:2.3:a:squid-cache:squid:3.1.5:*:*:*:*:*:*:*
squid-cache squid 3.1.5.1 cpe:2.3:a:squid-cache:squid:3.1.5.1:*:*:*:*:*:*:*
squid-cache squid 3.1.6 cpe:2.3:a:squid-cache:squid:3.1.6:*:*:*:*:*:*:*
squid-cache squid 3.1.7 cpe:2.3:a:squid-cache:squid:3.1.7:*:*:*:*:*:*:*
squid-cache squid 3.1.8 cpe:2.3:a:squid-cache:squid:3.1.8:*:*:*:*:*:*:*
squid-cache squid 3.1.9 cpe:2.3:a:squid-cache:squid:3.1.9:*:*:*:*:*:*:*
squid-cache squid 3.1.10 cpe:2.3:a:squid-cache:squid:3.1.10:*:*:*:*:*:*:*
squid-cache squid 3.1.11 cpe:2.3:a:squid-cache:squid:3.1.11:*:*:*:*:*:*:*
squid-cache squid 3.1.12 cpe:2.3:a:squid-cache:squid:3.1.12:*:*:*:*:*:*:*
squid-cache squid 3.1.13 cpe:2.3:a:squid-cache:squid:3.1.13:*:*:*:*:*:*:*
squid-cache squid 3.1.14 cpe:2.3:a:squid-cache:squid:3.1.14:*:*:*:*:*:*:*
squid-cache squid 3.1.15 cpe:2.3:a:squid-cache:squid:3.1.15:*:*:*:*:*:*:*
squid-cache squid 3.2.0.1 cpe:2.3:a:squid-cache:squid:3.2.0.1:*:*:*:*:*:*:*
squid-cache squid 3.2.0.2 cpe:2.3:a:squid-cache:squid:3.2.0.2:*:*:*:*:*:*:*
squid-cache squid 3.2.0.3 cpe:2.3:a:squid-cache:squid:3.2.0.3:*:*:*:*:*:*:*
squid-cache squid 3.2.0.4 cpe:2.3:a:squid-cache:squid:3.2.0.4:*:*:*:*:*:*:*
squid-cache squid 3.2.0.5 cpe:2.3:a:squid-cache:squid:3.2.0.5:*:*:*:*:*:*:*
squid-cache squid 3.2.0.6 cpe:2.3:a:squid-cache:squid:3.2.0.6:*:*:*:*:*:*:*
squid-cache squid 3.2.0.7 cpe:2.3:a:squid-cache:squid:3.2.0.7:*:*:*:*:*:*:*
squid-cache squid 3.2.0.8 cpe:2.3:a:squid-cache:squid:3.2.0.8:*:*:*:*:*:*:*
squid-cache squid 3.2.0.9 cpe:2.3:a:squid-cache:squid:3.2.0.9:*:*:*:*:*:*:*
squid-cache squid 3.2.0.10 cpe:2.3:a:squid-cache:squid:3.2.0.10:*:*:*:*:*:*:*
squid-cache squid 3.2.0.11 cpe:2.3:a:squid-cache:squid:3.2.0.11:*:*:*:*:*:*:*
squid-cache squid 3.2.0.12 cpe:2.3:a:squid-cache:squid:3.2.0.12:*:*:*:*:*:*:*
squid-cache squid 3.2.0.13 cpe:2.3:a:squid-cache:squid:3.2.0.13:*:*:*:*:*:*:*
squid-cache squid 3.2.0.14 cpe:2.3:a:squid-cache:squid:3.2.0.14:*:*:*:*:*:*:*
squid-cache squid 3.2.0.15 cpe:2.3:a:squid-cache:squid:3.2.0.15:*:*:*:*:*:*:*
squid-cache squid 3.2.0.16 cpe:2.3:a:squid-cache:squid:3.2.0.16:*:*:*:*:*:*:*
squid-cache squid 3.2.0.17 cpe:2.3:a:squid-cache:squid:3.2.0.17:*:*:*:*:*:*:*
squid-cache squid 3.2.0.18 cpe:2.3:a:squid-cache:squid:3.2.0.18:*:*:*:*:*:*:*
squid-cache squid 3.2.0.19 cpe:2.3:a:squid-cache:squid:3.2.0.19:*:*:*:*:*:*:*
squid-cache squid 3.2.1 cpe:2.3:a:squid-cache:squid:3.2.1:*:*:*:*:*:*:*
squid-cache squid 3.2.2 cpe:2.3:a:squid-cache:squid:3.2.2:*:*:*:*:*:*:*
squid-cache squid 3.2.3 cpe:2.3:a:squid-cache:squid:3.2.3:*:*:*:*:*:*:*
squid-cache squid 3.2.4 cpe:2.3:a:squid-cache:squid:3.2.4:*:*:*:*:*:*:*
squid-cache squid 3.2.5 cpe:2.3:a:squid-cache:squid:3.2.5:*:*:*:*:*:*:*
squid-cache squid 3.2.6 cpe:2.3:a:squid-cache:squid:3.2.6:*:*:*:*:*:*:*
squid-cache squid 3.2.7 cpe:2.3:a:squid-cache:squid:3.2.7:*:*:*:*:*:*:*
squid-cache squid 3.2.8 cpe:2.3:a:squid-cache:squid:3.2.8:*:*:*:*:*:*:*
squid-cache squid 3.2.9 cpe:2.3:a:squid-cache:squid:3.2.9:*:*:*:*:*:*:*
squid-cache squid 3.2.10 cpe:2.3:a:squid-cache:squid:3.2.10:*:*:*:*:*:*:*
squid-cache squid 3.2.11 cpe:2.3:a:squid-cache:squid:3.2.11:*:*:*:*:*:*:*
squid-cache squid 3.2.12 cpe:2.3:a:squid-cache:squid:3.2.12:*:*:*:*:*:*:*
squid-cache squid 3.3.0 cpe:2.3:a:squid-cache:squid:3.3.0:*:*:*:*:*:*:*
squid-cache squid 3.3.0.2 cpe:2.3:a:squid-cache:squid:3.3.0.2:*:*:*:*:*:*:*
squid-cache squid 3.3.0.3 cpe:2.3:a:squid-cache:squid:3.3.0.3:*:*:*:*:*:*:*
squid-cache squid 3.3.1 cpe:2.3:a:squid-cache:squid:3.3.1:*:*:*:*:*:*:*
squid-cache squid 3.3.2 cpe:2.3:a:squid-cache:squid:3.3.2:*:*:*:*:*:*:*
squid-cache squid 3.3.3 cpe:2.3:a:squid-cache:squid:3.3.3:*:*:*:*:*:*:*
squid-cache squid 3.3.4 cpe:2.3:a:squid-cache:squid:3.3.4:*:*:*:*:*:*:*
squid-cache squid 3.3.5 cpe:2.3:a:squid-cache:squid:3.3.5:*:*:*:*:*:*:*
squid-cache squid 3.3.6 cpe:2.3:a:squid-cache:squid:3.3.6:*:*:*:*:*:*:*
squid-cache squid 3.3.7 cpe:2.3:a:squid-cache:squid:3.3.7:*:*:*:*:*:*:*
squid-cache squid 3.3.8 cpe:2.3:a:squid-cache:squid:3.3.8:*:*:*:*:*:*:*
squid-cache squid 3.3.9 cpe:2.3:a:squid-cache:squid:3.3.9:*:*:*:*:*:*:*
squid-cache squid 3.3.10 cpe:2.3:a:squid-cache:squid:3.3.10:*:*:*:*:*:*:*
squid-cache squid 3.3.11 cpe:2.3:a:squid-cache:squid:3.3.11:*:*:*:*:*:*:*

References for CVE-2014-3609

cvelogic Threat Intelligence