How severe is CVE-2016-8871?

CVE-2016-8871 has a CVSS 3.x base score of 6.2, rated medium severity. It is exploitable over local access with low attack complexity, requires no privileges and no user interaction. Impact on confidentiality is high, integrity none, and availability none.

Is CVE-2016-8871 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 0% (33rd percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2016-8871?

CVE-2016-8871 primarily affects Botan Project Botan. In total, 4 product configurations (CPEs) are listed as vulnerable; see the affected-products list for the exact versions.

How do I fix CVE-2016-8871?

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

When was CVE-2016-8871 published?

CVE-2016-8871 was published on 2016-10-28 and last updated on 2026-06-17.

CVE-2016-8871

CVE-2016-8871 is a medium-severity vulnerability in Botan Project Botan with a CVSS 3.x base score of 6.2. 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-200.

Key facts

Severity: Medium (CVSS 3.x base score 6.2)
CVSS v2: 2.1
EPSS exploit prediction: 0% (33rd percentile)
Actively exploited: Not listed in CISA KEV
Weakness: CWE-200
Affected product: Botan Project Botan
Published: 2016-10-28
Last modified: 2026-06-17

Description

In Botan 1.11.29 through 1.11.32, RSA decryption with certain padding options had a detectable timing channel which could given sufficient queries be used to recover plaintext, aka an "OAEP side channel" attack.

Frequently asked questions

What is CVE-2016-8871?: In Botan 1.11.29 through 1.11.32, RSA decryption with certain padding options had a detectable timing channel which could given sufficient queries be used to recover plaintext, aka an "OAEP side channel" attack.
How severe is CVE-2016-8871?: CVE-2016-8871 has a CVSS 3.x base score of 6.2, rated medium severity. It is exploitable over local access with low attack complexity, requires no privileges and no user interaction. Impact on confidentiality is high, integrity none, and availability none.
Is CVE-2016-8871 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 0% (33rd percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2016-8871?: CVE-2016-8871 primarily affects Botan Project Botan. In total, 4 product configurations (CPEs) are listed as vulnerable; see the affected-products list for the exact versions.
How do I fix CVE-2016-8871?: Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround.
When was CVE-2016-8871 published?: CVE-2016-8871 was published on 2016-10-28 and last updated on 2026-06-17.

References

Affected products (4)

cpe:2.3:a:botan_project:botan:1.11.29:*:*:*:*:*:*:*
cpe:2.3:a:botan_project:botan:1.11.30:*:*:*:*:*:*:*
cpe:2.3:a:botan_project:botan:1.11.31:*:*:*:*:*:*:*
cpe:2.3:a:botan_project:botan:1.11.32:*:*:*:*:*:*:*

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