How severe is CVE-2014-5340?

CVE-2014-5340 has a CVSS 2.0 base score of 9.3, rated critical severity.

Is CVE-2014-5340 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 6% (93rd percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2014-5340?

CVE-2014-5340 primarily affects Check Mk Project Check Mk. In total, 7 product configurations (CPEs) are listed as vulnerable; see the affected-products list for the exact versions.

How do I fix CVE-2014-5340?

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

When was CVE-2014-5340 published?

CVE-2014-5340 was published on 2014-09-02 and last updated on 2026-06-17.

CVE-2014-5340

CVE-2014-5340 is a critical-severity vulnerability in Check Mk Project Check Mk with a CVSS 2.0 base score of 9.3. 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-94.

Key facts

Severity: Critical (CVSS 2.0 base score 9.3)
EPSS exploit prediction: 6% (93rd percentile)
Actively exploited: Not listed in CISA KEV
Weakness: CWE-94
Affected product: Check Mk Project Check Mk
Published: 2014-09-02
Last modified: 2026-06-17

Description

The wato component in Check_MK before 1.2.4p4 and 1.2.5 before 1.2.5i4 uses the pickle Python module unsafely, which allows remote attackers to execute arbitrary code via a crafted serialized object, related to an automation URL.

Frequently asked questions

What is CVE-2014-5340?: The wato component in Check_MK before 1.2.4p4 and 1.2.5 before 1.2.5i4 uses the pickle Python module unsafely, which allows remote attackers to execute arbitrary code via a crafted serialized object, related to an automation URL.
How severe is CVE-2014-5340?: CVE-2014-5340 has a CVSS 2.0 base score of 9.3, rated critical severity.
Is CVE-2014-5340 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 6% (93rd percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2014-5340?: CVE-2014-5340 primarily affects Check Mk Project Check Mk. In total, 7 product configurations (CPEs) are listed as vulnerable; see the affected-products list for the exact versions.
How do I fix CVE-2014-5340?: Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround. Given its critical severity, prioritise patching exposed systems.
When was CVE-2014-5340 published?: CVE-2014-5340 was published on 2014-09-02 and last updated on 2026-06-17.

References

Affected products (7)

cpe:2.3:a:check_mk_project:check_mk:*:p3:*:*:*:*:*:*
cpe:2.3:a:check_mk_project:check_mk:1.2.4:*:*:*:*:*:*:*
cpe:2.3:a:check_mk_project:check_mk:1.2.4:p1:*:*:*:*:*:*
cpe:2.3:a:check_mk_project:check_mk:1.2.4:p2:*:*:*:*:*:*
cpe:2.3:a:check_mk_project:check_mk:1.2.5:i1:*:*:*:*:*:*
cpe:2.3:a:check_mk_project:check_mk:1.2.5:i2:*:*:*:*:*:*
cpe:2.3:a:check_mk_project:check_mk:1.2.5:i3:*:*:*:*:*:*

More vulnerabilities in Check Mk Project Check Mk

CVE-2014-2331 — High (CVSS 8.5): Check_MK 1.2.2p2, 1.2.2p3, and 1.2.3i5 allows remote authenticated users to execute arbitrary Python code via a crafted…
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CVE-2014-2332 — Medium (CVSS 5.5): Check_MK before 1.2.2p3 and 1.2.3x before 1.2.3i5 allows remote authenticated users to delete arbitrary files via a…

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