How severe is CVE-2013-4221?

CVE-2013-4221 has a CVSS 2.0 base score of 7.5, rated high severity.

Is CVE-2013-4221 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 3% (86th percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2013-4221?

CVE-2013-4221 primarily affects Restlet. In total, 16 product configurations (CPEs) are listed as vulnerable; see the affected-products list for the exact versions.

How do I fix CVE-2013-4221?

Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround. Given its high severity, prioritise patching exposed systems.

When was CVE-2013-4221 published?

CVE-2013-4221 was published on 2013-10-10 and last updated on 2026-06-16.

CVE-2013-4221

CVE-2013-4221 is a high-severity vulnerability in Restlet with a CVSS 2.0 base score of 7.5. It is not currently listed as actively exploited by CISA, and its EPSS exploit-prediction score is low. The underlying weakness is classified as CWE-16.

Key facts

Severity: High (CVSS 2.0 base score 7.5)
EPSS exploit prediction: 3% (86th percentile)
Actively exploited: Not listed in CISA KEV
Weakness: CWE-16
Affected product: Restlet
Published: 2013-10-10
Last modified: 2026-06-16

Description

The default configuration of the ObjectRepresentation class in Restlet before 2.1.4 deserializes objects from untrusted sources using the Java XMLDecoder, which allows remote attackers to execute arbitrary Java code via crafted XML.

Frequently asked questions

What is CVE-2013-4221?: The default configuration of the ObjectRepresentation class in Restlet before 2.1.4 deserializes objects from untrusted sources using the Java XMLDecoder, which allows remote attackers to execute arbitrary Java code via crafted XML.
How severe is CVE-2013-4221?: CVE-2013-4221 has a CVSS 2.0 base score of 7.5, rated high severity.
Is CVE-2013-4221 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 3% (86th percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2013-4221?: CVE-2013-4221 primarily affects Restlet. In total, 16 product configurations (CPEs) are listed as vulnerable; see the affected-products list for the exact versions.
How do I fix CVE-2013-4221?: Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround. Given its high severity, prioritise patching exposed systems.
When was CVE-2013-4221 published?: CVE-2013-4221 was published on 2013-10-10 and last updated on 2026-06-16.

References

Affected products (16)

cpe:2.3:a:restlet:restlet:*:*:*:*:*:*:*:*
cpe:2.3:a:restlet:restlet:2.1:milestone1:*:*:*:*:*:*
cpe:2.3:a:restlet:restlet:2.1:milestone2:*:*:*:*:*:*
cpe:2.3:a:restlet:restlet:2.1:milestone3:*:*:*:*:*:*
cpe:2.3:a:restlet:restlet:2.1:milestone4:*:*:*:*:*:*
cpe:2.3:a:restlet:restlet:2.1:milestone5:*:*:*:*:*:*
cpe:2.3:a:restlet:restlet:2.1:milestone6:*:*:*:*:*:*
cpe:2.3:a:restlet:restlet:2.1:rc1:*:*:*:*:*:*
cpe:2.3:a:restlet:restlet:2.1:rc2:*:*:*:*:*:*
cpe:2.3:a:restlet:restlet:2.1:rc3:*:*:*:*:*:*
cpe:2.3:a:restlet:restlet:2.1:rc4:*:*:*:*:*:*
cpe:2.3:a:restlet:restlet:2.1:rc5:*:*:*:*:*:*
cpe:2.3:a:restlet:restlet:2.1:rc6:*:*:*:*:*:*
cpe:2.3:a:restlet:restlet:2.1.0:*:*:*:*:*:*:*
cpe:2.3:a:restlet:restlet:2.1.1:*:*:*:*:*:*:*
cpe:2.3:a:restlet:restlet:2.1.2:*:*:*:*:*:*:*

More vulnerabilities in Restlet

CVE-2017-14949 — High (CVSS 7.5): Restlet Framework before 2.3.12 allows remote attackers to access arbitrary files via a crafted REST API HTTP request…
CVE-2017-14868 — High (CVSS 7.5): Restlet Framework before 2.3.11, when using SimpleXMLProvider, allows remote attackers to access arbitrary files via an…
CVE-2013-4271 — High (CVSS 7.5): The default configuration of the ObjectRepresentation class in Restlet before 2.1.4 deserializes objects from untrusted…

All CVEs affecting Restlet →

Other CWE-16 vulnerabilities

CVE-2013-4316 — Critical (CVSS 10.0): Apache Struts 2.0.0 through 2.3.15.1 enables Dynamic Method Invocation by default, which has unknown impact and attack…
CVE-2013-1221 — Critical (CVSS 10.0): The Tomcat Web Management feature in Cisco Unified Customer Voice Portal (CVP) Software before 9.0.1 ES 11 does not…
CVE-2011-4501 — Critical (CVSS 10.0): The UPnP IGD implementation in Edimax EdiLinux on the Edimax BR-6104K with firmware before 3.25, Edimax 6114Wg,…
CVE-2010-4586 — Critical (CVSS 10.0): The default configuration of Opera before 11.00 enables WebSockets functionality, which has unspecified impact and…
CVE-2010-2977 — Critical (CVSS 10.0): Cisco Unified Wireless Network (UWN) Solution 7.x before 7.0.98.0 does not properly implement TLS and SSL, which has…
CVE-2010-2276 — Critical (CVSS 10.0): The default configuration of the build process in Dojo 0.4.x before 0.4.4, 1.0.x before 1.0.3, 1.1.x before 1.1.2,…

Browse all CWE-16 vulnerabilities →