Is CVE-2013-2052 being actively exploited?

CVE-2013-2052 is not currently listed in the CISA Known Exploited Vulnerabilities (KEV) catalog.

What is the CVSS score for CVE-2013-2052?

CVE-2013-2052 has a CVSS 2.0 base score of 5.1 (MEDIUM).

CVE-2013-2052

MEDIUM · CVSS 5.1EPSS 1.8%EU EUVD

Buffer overflow in the atodn function in libreswan 3.0 and 3.1, when Opportunistic Encryption is enabled and an RSA key is being used, allows remote attackers to cause a denial of service (pluto IKE daemon crash) and possibly execute arbitrary code via crafted DNS TXT records. NOTE: this might be the same vulnerability as CVE-2013-2053 and CVE-2013-2054.

Key facts

CVSS score: 5.1 (v2.0)
Severity: MEDIUM
CVSS vector: AV:N/AC:H/Au:N/C:P/I:P/A:P
Weakness (CWE): CWE-119
EPSS score: 1.8% (78th percentile)
In CISA KEV: No
In EU EUVD: Yes (EUVD-2013-2034)
Published: July 9, 2013
NVD last modified: June 16, 2026
Status: Modified

EU Vulnerability Database (EUVD)

This vulnerability is also tracked by ENISA as EUVD-2013-2034 in the EU Vulnerability Database. Last updated in EUVD on September 16, 2024.

View on the EU Vulnerability Database

Affected products

libreswan / libreswan
libreswan / libreswan

References

https://libreswan.org/security/CVE-2013-2052/CVE-2013-2052.txt(Patch, Vendor Advisory)
https://lists.libreswan.org/pipermail/swan-announce/2013/000003.html(Vendor Advisory)

Last updated September 17, 2026 · Source: NVD, CISA KEV, FIRST.org EPSS

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