CVE-2014-3609

CVE-2014-3609 is a medium-severity vulnerability in Squid-cache Squid with a CVSS 2.0 base score of 5.0. Its EPSS exploit-prediction score of 56% places it in the 99th percentile, indicating an elevated likelihood of exploitation. The underlying weakness is classified as CWE-20.

Key facts

Description

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."

Frequently asked questions

What is 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."
How severe is CVE-2014-3609?
CVE-2014-3609 has a CVSS 2.0 base score of 5.0, rated medium severity.
Is CVE-2014-3609 being actively exploited?
It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 56% (99th percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2014-3609?
CVE-2014-3609 primarily affects Squid-cache Squid. In total, 88 product configurations (CPEs) are listed as vulnerable; see the affected-products list for the exact versions.
How do I fix CVE-2014-3609?
Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround.
When was CVE-2014-3609 published?
CVE-2014-3609 was published on 2014-09-11 and last updated on 2026-06-17.

References

Affected products (88)

More vulnerabilities in Squid-cache Squid

All CVEs affecting Squid-cache Squid →

Other CWE-20 (Improper Input Validation) vulnerabilities

Browse all CWE-20 (Improper Input Validation) vulnerabilities →