How severe is CVE-2013-7294?

CVE-2013-7294 has a CVSS 2.0 base score of 5.0, rated medium severity.

Is CVE-2013-7294 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 3% (83rd percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2013-7294?

CVE-2013-7294 primarily affects Libreswan. In total, 7 product configurations (CPEs) are listed as vulnerable; see the affected-products list for the exact versions.

How do I fix CVE-2013-7294?

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

When was CVE-2013-7294 published?

CVE-2013-7294 was published on 2014-01-16 and last updated on 2026-06-17.

CVE-2013-7294

CVE-2013-7294 is a medium-severity vulnerability in Libreswan with a CVSS 2.0 base score of 5.0. 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-20.

Key facts

Severity: Medium (CVSS 2.0 base score 5.0)
EPSS exploit prediction: 3% (83rd percentile)
Actively exploited: Not listed in CISA KEV
Weakness: CWE-20
Affected product: Libreswan
Published: 2014-01-16
Last modified: 2026-06-17

Description

The ikev2parent_inI1outR1 function in pluto/ikev2_parent.c in libreswan before 3.7 allows remote attackers to cause a denial of service (restart) via an IKEv2 I1 notification without a KE payload.

Frequently asked questions

What is CVE-2013-7294?: The ikev2parent_inI1outR1 function in pluto/ikev2_parent.c in libreswan before 3.7 allows remote attackers to cause a denial of service (restart) via an IKEv2 I1 notification without a KE payload.
How severe is CVE-2013-7294?: CVE-2013-7294 has a CVSS 2.0 base score of 5.0, rated medium severity.
Is CVE-2013-7294 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 3% (83rd percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2013-7294?: CVE-2013-7294 primarily affects Libreswan. In total, 7 product configurations (CPEs) are listed as vulnerable; see the affected-products list for the exact versions.
How do I fix CVE-2013-7294?: Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround.
When was CVE-2013-7294 published?: CVE-2013-7294 was published on 2014-01-16 and last updated on 2026-06-17.

References

Affected products (7)

cpe:2.3:a:libreswan:libreswan:*:*:*:*:*:*:*:*
cpe:2.3:a:libreswan:libreswan:3.0:*:*:*:*:*:*:*
cpe:2.3:a:libreswan:libreswan:3.1:*:*:*:*:*:*:*
cpe:2.3:a:libreswan:libreswan:3.2:*:*:*:*:*:*:*
cpe:2.3:a:libreswan:libreswan:3.3:*:*:*:*:*:*:*
cpe:2.3:a:libreswan:libreswan:3.4:*:*:*:*:*:*:*
cpe:2.3:a:libreswan:libreswan:3.5:*:*:*:*:*:*:*

More vulnerabilities in Libreswan

CVE-2013-7283 — Critical (CVSS 9.3): Race condition in the libreswan.spec files for Red Hat Enterprise Linux (RHEL) and Fedora packages in libreswan 3.6 has…
CVE-2026-12413 — High (CVSS 7.5): An invalidly formatted IKEv2 fragment causes the Libreswan pluto daemon to crash and restart. Continued exploitation…
CVE-2023-30570 — High (CVSS 7.5): pluto in Libreswan before 4.11 allows a denial of service (responder SPI mishandling and daemon crash) via…
CVE-2023-2295 — High (CVSS 7.5): A vulnerability was found in the libreswan library. This security issue occurs when an IKEv1 Aggressive Mode packet is…
CVE-2022-23094 — High (CVSS 7.5): Libreswan 4.2 through 4.5 allows remote attackers to cause a denial of service (NULL pointer dereference and daemon…
CVE-2020-1763 — High (CVSS 7.5): An out-of-bounds buffer read flaw was found in the pluto daemon of libreswan from versions 3.27 till 3.31 where, an…

All CVEs affecting Libreswan →

Other CWE-20 (Improper Input Validation) vulnerabilities

CVE-2026-48316 — Critical (CVSS 10.0): ColdFusion versions 2025.9, 2023.20 and earlier are affected by an Improper Input Validation vulnerability that could…
CVE-2026-48281 — Critical (CVSS 10.0): ColdFusion versions 2025.9, 2023.20 and earlier are affected by an Improper Input Validation vulnerability that could…
CVE-2026-48277 — Critical (CVSS 10.0): ColdFusion versions 2025.9, 2023.20 and earlier are affected by an Improper Input Validation vulnerability that could…
CVE-2026-48055 — Critical (CVSS 10.0): Streambert is a cross-platform Electron Desktop App to stream and download any video media. In versions 2.4.0 and…
CVE-2026-34910 — Critical (CVSS 10.0): A malicious actor with access to the network could exploit an Improper Input Validation vulnerability found in UniFi OS…
CVE-2026-33587 — Critical (CVSS 10.0): Lack of user input sanitisation in Open Notebook v1.8.3 allows the application user to execute Python code (and…

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