CVE-2016-2196
CVE-2016-2196 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: 5% (92nd percentile)
- Actively exploited: Not listed in CISA KEV
- Weakness: CWE-119
- Affected product: Botan Project Botan
- Published:
- Last modified:
Description
Heap-based buffer overflow in the P-521 reduction function in Botan 1.11.x before 1.11.27 allows remote attackers to cause a denial of service (memory overwrite and crash) or execute arbitrary code via unspecified vectors.
Frequently asked questions
- What is CVE-2016-2196?
- Heap-based buffer overflow in the P-521 reduction function in Botan 1.11.x before 1.11.27 allows remote attackers to cause a denial of service (memory overwrite and crash) or execute arbitrary code via unspecified vectors.
- How severe is CVE-2016-2196?
- CVE-2016-2196 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-2016-2196 being actively exploited?
- It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 5% (92nd percentile), an estimate of the probability of exploitation in the next 30 days.
- What products are affected by CVE-2016-2196?
- CVE-2016-2196 primarily affects Botan Project Botan. In total, 27 product configurations (CPEs) are listed as vulnerable; see the affected-products list for the exact versions.
- How do I fix CVE-2016-2196?
- 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-2016-2196 published?
- CVE-2016-2196 was published on 2016-05-13 and last updated on 2026-06-17.
References
Affected products (27)
- 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:*:*:*:*:*:*:*
More vulnerabilities in Botan Project Botan
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- CVE-2016-6878 — Critical (CVSS 9.8): The Curve25519 code in botan before 1.11.31, on systems without a native 128-bit integer type, might allow attackers to…
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- CVE-2016-9132 — Critical (CVSS 9.8): In Botan 1.8.0 through 1.11.33, when decoding BER data an integer overflow could occur, which would cause an incorrect…
- CVE-2016-2195 — Critical (CVSS 9.8): Integer overflow in the PointGFp constructor in Botan before 1.10.11 and 1.11.x before 1.11.27 allows remote attackers…
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