How severe is CVE-2013-2052?

CVE-2013-2052 has a CVSS 2.0 base score of 5.1, rated medium severity.

Is CVE-2013-2052 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 2% (75th percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2013-2052?

CVE-2013-2052 primarily affects Libreswan. In total, 2 product configurations (CPEs) are listed as vulnerable; see the affected-products list for the exact versions.

How do I fix CVE-2013-2052?

Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround.

When was CVE-2013-2052 published?

CVE-2013-2052 was published on 2013-07-09 and last updated on 2026-06-16.

CVE-2013-2052

CVE-2013-2052 is a medium-severity vulnerability in Libreswan with a CVSS 2.0 base score of 5.1. 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-119.

Key facts

Severity: Medium (CVSS 2.0 base score 5.1)
EPSS exploit prediction: 2% (75th percentile)
Actively exploited: Not listed in CISA KEV
Weakness: CWE-119
Affected product: Libreswan
Published: 2013-07-09
Last modified: 2026-06-16

Description

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.

Frequently asked questions

What is CVE-2013-2052?: 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.
How severe is CVE-2013-2052?: CVE-2013-2052 has a CVSS 2.0 base score of 5.1, rated medium severity.
Is CVE-2013-2052 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 2% (75th percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2013-2052?: CVE-2013-2052 primarily affects Libreswan. In total, 2 product configurations (CPEs) are listed as vulnerable; see the affected-products list for the exact versions.
How do I fix CVE-2013-2052?: Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround.
When was CVE-2013-2052 published?: CVE-2013-2052 was published on 2013-07-09 and last updated on 2026-06-16.

References

Affected products (2)

cpe:2.3:a:libreswan:libreswan:3.0:*:*:*:*:*:*:*
cpe:2.3:a:libreswan:libreswan:3.1:*:*:*:*:*:*:*

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