CVE catalog

CVE-2026-32877

Severity: High · CVSS 8.2
Published: Mar 30, 2026, 8:36:43 PM UTC
Source: [NVD] · [CVE record]
EPSS: 0.28% · Oct 25, 2026

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.

Vulnerable and fixed packages

Distribution-reported package versions and fixes. These do not depend on matching against the OpenFactory package catalog.

Distribution	Package	Release	Version	Status
Debian	botan	trixie	`2.19.5+dfsg-4`	vulnerable
Debian	botan	bookworm	`2.19.3+dfsg-1+deb12u1`	vulnerable
Cpe	botan	Not reported	Not reported	vulnerable
Cpe	botan	Not reported	`3.11.0`	fixed
Alpine	botan3	3.24	`3.11.0-r0`	fixed

Fixed-version evidence

Distribution	Package	Type	Release	Fixed version	Urgency	Origin	Bugs
Debian	botan	source	trixie	`(unfixed)`	not yet assigned	Not reported	Not reported
Debian	botan	source	bookworm	`(unfixed)`	not yet assigned	Not reported	Not reported
Cpe	botan	cpe	Not reported	`3.11.0`	Not reported	Not reported	Not reported
Alpine	botan3	apk	3.24	`3.11.0-r0`	Not reported	ALPINE-CVE-2026-32877	Not reported

Notes

[trixie] botan: Minor issue [bookworm] botan: Minor issue; SM2 C3 heap over-read; fix only in 3.11.0

OpenFactory catalog packages

[Debian 12 (Bookworm)]

[botan]Affected
Details (2)
- 2.19.3+dfsg-1+deb12u1 · amd64 · bookworm
  Affected
  nvd · botan · debian · bookworm; nvd · botan · debian · 12
- 2.19.3+dfsg-1+deb12u1 · arm64 · bookworm
  Affected
  nvd · botan · debian · bookworm; nvd · botan · debian · 12
[libbotan-2-19]Affected
Source package: [botan]
Details (2)
- 2.19.3+dfsg-1+deb12u1 · amd64 · bookworm
  Affected
  nvd · botan · debian · bookworm; nvd · botan · debian · 12
- 2.19.3+dfsg-1+deb12u1 · arm64 · bookworm
  Affected
  nvd · botan · debian · bookworm; nvd · botan · debian · 12
[libbotan-2-dev]Affected
Source package: [botan]
Details (2)
- 2.19.3+dfsg-1+deb12u1 · amd64 · bookworm
  Affected
  nvd · botan · debian · bookworm; nvd · botan · debian · 12
- 2.19.3+dfsg-1+deb12u1 · arm64 · bookworm
  Affected
  nvd · botan · debian · bookworm; nvd · botan · debian · 12
[libbotan-2-doc]Affected
Source package: [botan]
Details (2)
- 2.19.3+dfsg-1+deb12u1 · all · bookworm
  Affected
  nvd · botan · debian · bookworm; nvd · botan · debian · 12
- 2.19.3+dfsg-1+deb12u1 · all · bookworm
  Affected
  nvd · botan · debian · bookworm; nvd · botan · debian · 12
[python3-botan]Affected
Source package: [botan]
Details (2)
- 2.19.3+dfsg-1+deb12u1 · amd64 · bookworm
  Affected
  nvd · botan · debian · bookworm; nvd · botan · debian · 12
- 2.19.3+dfsg-1+deb12u1 · arm64 · bookworm
  Affected
  nvd · botan · debian · bookworm; nvd · botan · debian · 12

[Debian 13 (Trixie)]

[botan]Affected
Source package: [botan3]
Details (4)
- 3.7.1+dfsg-2 · amd64 · trixie
  Affected · Fixed: 3.11.0+dfsg-2
  nvd · botan · debian · 13; nvd · botan3 · debian · 13
- 3.7.1+dfsg-2 · arm64 · trixie
  Affected · Fixed: 3.11.0+dfsg-2
  nvd · botan · debian · 13; nvd · botan3 · debian · 13
- 3.12.0+dfsg-2~deb13u1 · amd64 · trixie-security
  Affected · Fixed: 3.11.0+dfsg-2
  nvd · botan · debian · 13; nvd · botan3 · debian · 13
- 3.12.0+dfsg-2~deb13u1 · arm64 · trixie-security
  Affected · Fixed: 3.11.0+dfsg-2
  nvd · botan · debian · 13; nvd · botan3 · debian · 13
[libbotan-2-19]Affected
Source package: [botan]
Details (2)
- 2.19.5+dfsg-4 · amd64 · trixie
  Affected
  nvd · botan · debian · 13
- 2.19.5+dfsg-4 · arm64 · trixie
  Affected
  nvd · botan · debian · 13
[libbotan-2-dev]Affected
Source package: [botan]
Details (2)
- 2.19.5+dfsg-4 · amd64 · trixie
  Affected
  nvd · botan · debian · 13
- 2.19.5+dfsg-4 · arm64 · trixie
  Affected
  nvd · botan · debian · 13
[libbotan-2-doc]Affected
Source package: [botan]
Details (2)
- 2.19.5+dfsg-4 · all · trixie
  Affected
  nvd · botan · debian · 13
- 2.19.5+dfsg-4 · all · trixie
  Affected
  nvd · botan · debian · 13
[libbotan-3-7]Affected
Source package: [botan3]
Details (2)
- 3.7.1+dfsg-2 · amd64 · trixie
  Affected · Fixed: 3.11.0+dfsg-2
  nvd · botan3 · debian · 13
- 3.7.1+dfsg-2 · arm64 · trixie
  Affected · Fixed: 3.11.0+dfsg-2
  nvd · botan3 · debian · 13
[libbotan-3-dev]Affected
Source package: [botan3]
Details (4)
- 3.7.1+dfsg-2 · amd64 · trixie
  Affected · Fixed: 3.11.0+dfsg-2
  nvd · botan3 · debian · 13
- 3.7.1+dfsg-2 · arm64 · trixie
  Affected · Fixed: 3.11.0+dfsg-2
  nvd · botan3 · debian · 13
- 3.12.0+dfsg-2~deb13u1 · amd64 · trixie-security
  Fixed · Fixed: 3.11.0+dfsg-2
  nvd · botan3 · debian · 13
- 3.12.0+dfsg-2~deb13u1 · arm64 · trixie-security
  Fixed · Fixed: 3.11.0+dfsg-2
  nvd · botan3 · debian · 13
[libbotan-3-doc]Affected
Source package: [botan3]
Details (4)
- 3.7.1+dfsg-2 · all · trixie
  Affected · Fixed: 3.11.0+dfsg-2
  nvd · botan3 · debian · 13
- 3.7.1+dfsg-2 · all · trixie
  Affected · Fixed: 3.11.0+dfsg-2
  nvd · botan3 · debian · 13
- 3.12.0+dfsg-2~deb13u1 · all · trixie-security
  Fixed · Fixed: 3.11.0+dfsg-2
  nvd · botan3 · debian · 13
- 3.12.0+dfsg-2~deb13u1 · all · trixie-security
  Fixed · Fixed: 3.11.0+dfsg-2
  nvd · botan3 · debian · 13
[python3-botan]Affected
Source package: [botan3]
Details (4)
- 3.7.1+dfsg-2 · amd64 · trixie
  Affected · Fixed: 3.11.0+dfsg-2
  nvd · botan3 · debian · 13
- 3.7.1+dfsg-2 · arm64 · trixie
  Affected · Fixed: 3.11.0+dfsg-2
  nvd · botan3 · debian · 13
- 3.12.0+dfsg-2~deb13u1 · amd64 · trixie-security
  Fixed · Fixed: 3.11.0+dfsg-2
  nvd · botan3 · debian · 13
- 3.12.0+dfsg-2~deb13u1 · arm64 · trixie-security
  Fixed · Fixed: 3.11.0+dfsg-2
  nvd · botan3 · debian · 13
[libbotan-3-12]Fixed
Source package: [botan3]
Details (2)
- 3.12.0+dfsg-2~deb13u1 · amd64 · trixie-security
  Fixed · Fixed: 3.11.0+dfsg-2
  nvd · botan3 · debian · 13
- 3.12.0+dfsg-2~deb13u1 · arm64 · trixie-security
  Fixed · Fixed: 3.11.0+dfsg-2
  nvd · botan3 · debian · 13

Observed: Oct 27, 2026, 8:01:32 AM UTC

References

[Debian Security Tracker] · [FIRST EPSS] · [National Vulnerability Database (NVD)] · [OSV Package Vulnerability Database] · [Red Hat security advisories and VEX]