How severe is CVE-2015-3931?

CVE-2015-3931 has a CVSS 3.x base score of 7.8, rated high severity. It is exploitable over local access with low attack complexity, requires no privileges and user interaction. Impact on confidentiality is high, integrity high, and availability high.

Is CVE-2015-3931 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 2% (80th percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2015-3931?

CVE-2015-3931 affects Microsec E-szigno. See the affected-products list for the exact vulnerable versions.

How do I fix CVE-2015-3931?

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-2015-3931 published?

CVE-2015-3931 was published on 2017-07-21 and last updated on 2026-06-17.

CVE-2015-3931

CVE-2015-3931 is a high-severity vulnerability in Microsec E-szigno with a CVSS 3.x base score of 7.8. 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-91.

Key facts

Severity: High (CVSS 3.x base score 7.8)
CVSS v2: 6.8
EPSS exploit prediction: 2% (80th percentile)
Actively exploited: Not listed in CISA KEV
Weakness: CWE-91
Affected product: Microsec E-szigno
Published: 2017-07-21
Last modified: 2026-06-17

Description

Microsec e-Szigno before 3.2.7.12 allows remote attackers to perform XML signature wrapping attacks via an e-akta signed document with a ds:Object node with a crafted payload prepended to a valid ds:Object.

Frequently asked questions

What is CVE-2015-3931?: Microsec e-Szigno before 3.2.7.12 allows remote attackers to perform XML signature wrapping attacks via an e-akta signed document with a ds:Object node with a crafted payload prepended to a valid ds:Object.
How severe is CVE-2015-3931?: CVE-2015-3931 has a CVSS 3.x base score of 7.8, rated high severity. It is exploitable over local access with low attack complexity, requires no privileges and user interaction. Impact on confidentiality is high, integrity high, and availability high.
Is CVE-2015-3931 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 2% (80th percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2015-3931?: CVE-2015-3931 affects Microsec E-szigno. See the affected-products list for the exact vulnerable versions.
How do I fix CVE-2015-3931?: 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-2015-3931 published?: CVE-2015-3931 was published on 2017-07-21 and last updated on 2026-06-17.

References

Affected products (1)

cpe:2.3:a:microsec:e-szigno:*:*:*:*:*:*:*:*

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