How severe is CVE-2016-2195?

CVE-2016-2195 has a CVSS 3.x base score of 9.8, rated critical severity. It is exploitable over network with low attack complexity, requires no privileges and no user interaction. Impact on confidentiality is high, integrity high, and availability high.

Is CVE-2016-2195 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 7% (93rd percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2016-2195?

CVE-2016-2195 primarily affects Botan Project Botan. In total, 29 product configurations (CPEs) are listed as vulnerable; see the affected-products list for the exact versions.

How do I fix CVE-2016-2195?

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-2016-2195 published?

CVE-2016-2195 was published on 2016-05-13 and last updated on 2026-06-17.

CVE-2016-2195

CVE-2016-2195 is a critical-severity vulnerability in Botan Project Botan with a CVSS 3.x base score of 9.8. 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-119.

Key facts

Severity: Critical (CVSS 3.x base score 9.8)
CVSS v2: 10.0
EPSS exploit prediction: 7% (93rd percentile)
Actively exploited: Not listed in CISA KEV
Weakness: CWE-119
Affected product: Botan Project Botan
Published: 2016-05-13
Last modified: 2026-06-17

Description

Integer overflow in the PointGFp constructor in Botan before 1.10.11 and 1.11.x before 1.11.27 allows remote attackers to overwrite memory and possibly execute arbitrary code via a crafted ECC point, which triggers a heap-based buffer overflow.

Frequently asked questions

What is CVE-2016-2195?: Integer overflow in the PointGFp constructor in Botan before 1.10.11 and 1.11.x before 1.11.27 allows remote attackers to overwrite memory and possibly execute arbitrary code via a crafted ECC point, which triggers a heap-based buffer overflow.
How severe is CVE-2016-2195?: CVE-2016-2195 has a CVSS 3.x base score of 9.8, rated critical severity. It is exploitable over network with low attack complexity, requires no privileges and no user interaction. Impact on confidentiality is high, integrity high, and availability high.
Is CVE-2016-2195 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 7% (93rd percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2016-2195?: CVE-2016-2195 primarily affects Botan Project Botan. In total, 29 product configurations (CPEs) are listed as vulnerable; see the affected-products list for the exact versions.
How do I fix CVE-2016-2195?: 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-2016-2195 published?: CVE-2016-2195 was published on 2016-05-13 and last updated on 2026-06-17.

References

Affected products (29)

cpe:2.3:a:botan_project:botan:*:*:*:*:*:*:*:*
cpe:2.3:a:botan_project:botan:1.11.0:*:*:*:*:*:*:*
cpe:2.3:a:botan_project:botan:1.11.1:*:*:*:*:*:*:*
cpe:2.3:a:botan_project:botan:1.11.2:*:*:*:*:*:*:*
cpe:2.3:a:botan_project:botan:1.11.3:*:*:*:*:*:*:*
cpe:2.3:a:botan_project:botan:1.11.4:*:*:*:*:*:*:*
cpe:2.3:a:botan_project:botan:1.11.5:*:*:*:*:*:*:*
cpe:2.3:a:botan_project:botan:1.11.6:*:*:*:*:*:*:*
cpe:2.3:a:botan_project:botan:1.11.7:*:*:*:*:*:*:*
cpe:2.3:a:botan_project:botan:1.11.8:*:*:*:*:*:*:*
cpe:2.3:a:botan_project:botan:1.11.9:*:*:*:*:*:*:*
cpe:2.3:a:botan_project:botan:1.11.10:*:*:*:*:*:*:*
cpe:2.3:a:botan_project:botan:1.11.11:*:*:*:*:*:*:*
cpe:2.3:a:botan_project:botan:1.11.12:*:*:*:*:*:*:*
cpe:2.3:a:botan_project:botan:1.11.13:*:*:*:*:*:*:*
cpe:2.3:a:botan_project:botan:1.11.14:*:*:*:*:*:*:*
cpe:2.3:a:botan_project:botan:1.11.15:*:*:*:*:*:*:*
cpe:2.3:a:botan_project:botan:1.11.16:*:*:*:*:*:*:*
cpe:2.3:a:botan_project:botan:1.11.17:*:*:*:*:*:*:*
cpe:2.3:a:botan_project:botan:1.11.18:*:*:*:*:*:*:*
cpe:2.3:a:botan_project:botan:1.11.19:*:*:*:*:*:*:*
cpe:2.3:a:botan_project:botan:1.11.20:*:*:*:*:*:*:*
cpe:2.3:a:botan_project:botan:1.11.21:*:*:*:*:*:*:*
cpe:2.3:a:botan_project:botan:1.11.22:*:*:*:*:*:*:*
cpe:2.3:a:botan_project:botan:1.11.23:*:*:*:*:*:*:*
cpe:2.3:a:botan_project:botan:1.11.24:*:*:*:*:*:*:*
cpe:2.3:a:botan_project:botan:1.11.25:*:*:*:*:*:*:*
cpe:2.3:a:botan_project:botan:1.11.26:*:*:*:*:*:*:*
cpe:2.3:o:debian:debian_linux:8.0:*:*:*:*:*:*:*

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