Is CVE-2026-32877 in the CISA KEV catalog?

No. CVE-2026-32877 is not currently on the CISA Known Exploited Vulnerabilities list.

What is the CVSS severity of CVE-2026-32877?

CVE-2026-32877 has a CVSS v3 base score of 8.2 (HIGH).

What is the EPSS score for CVE-2026-32877?

CVE-2026-32877 has an EPSS score of 0.28% (19th percentile), estimating the probability of exploitation in the next 30 days.

CVE & CISA-KEV Catalog

CVE-2026-32877

HIGH

8.2

CVSS v3

NVD

Description

Botan is a C++ cryptography library. From version 2.3.0 to before version 3.11.0, during SM2 decryption, the code that checked the authentication code value (C3) failed to check that the encoded value was of the expected length prior to comparison. An invalid ciphertext can cause a heap over-read of up to 31 bytes, resulting in a crash or potentially other undefined behavior. This issue has been patched in version 3.11.0.

CWE-125Out-of-bounds Read

CVSS v3 Vector

Exploitability

Attack VectorNetwork

Attack ComplexityLow

Privileges RequiredNone

User InteractionNone

ScopeUnchanged

Impact

ConfidentialityLow

IntegrityNone

AvailabilityHigh

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:H

Exploit Intelligence

0.28%probability of exploitation in 30 days

19thpercentile

Low risk: more likely to be exploited than 19% of all known CVEs.

References

https://github.com/randombit/botan/security/advisories/GHSA-7jj6-4r42-w9h6

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This product uses NVD data but is not endorsed or certified by the NVD. EPSS scores courtesy of FIRST.org (https://www.first.org/epss). Source: CISA KEV Catalog. Data as of 2026-04-13.