CVE catalog
CVE-2026-45446
Issue summary: The implementations of AES-SIV (RFC 5297) and AES-GCM-SIV (RFC 8452) mishandle the authentication of AAD (Additional Authenticated Data) with an empty ciphertext allowing a forgery of s
- Severity
- Medium · CVSS 5.3
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:L/A:N - Published
- Source
- [NVD] · [CVE record]
- EPSS
- 0.24% · Oct 22, 2026
Issue summary: The implementations of AES-SIV (RFC 5297) and AES-GCM-SIV (RFC 8452) mishandle the authentication of AAD (Additional Authenticated Data) with an empty ciphertext allowing a forgery of such messages. Impact summary: An attacker can forge empty messages with arbitrary AAD to the victim's application using these ciphers. AES-SIV (RFC 5297) and AES-GCM-SIV (RFC 8452) are nonce-misuse-resistant AEAD modes: they accept a key, nonce, optional AAD (bytes that are authenticated but not encrypted), and plaintext, and produces ciphertext plus a 16-byte tag. On decrypt, `EVP_DecryptFinal_ex()` is documented to return success only if the tag is verified succesfully. In OpenSSL's provider implementation of these ciphers, the expected tag is computed only when decryption function is invoked with non-empty data. If the caller supplies AAD and then calls `EVP_DecryptFinal_ex()` without invocation of the ciphertext update, which can happen when the received ciphertext length is zero, the tag is never recalculated and still holds its all-zeros value. When AES-GCM-SIV is used, an attacker who sends arbitrary AAD, empty ciphertext, and all-zeros tag passes authentication under any key they do not know, single-shot. When AES-SIV is used, for mounting the attack it's necessary for the application to reuse the decryption context without resetting the key. AES-SIV is implemented since OpenSSL 3.0. AES-GCM-SIV is implemented since OpenSSL 3.2. No protocols implemented in OpenSSL itself (TLS/CMS/PKCS7/HPKE/QUIC) support either AES-GCM-SIV or AES-SIV. To mount an attack, the applications must implement their own protocol and use the EVP interface. Also they must skip the ciphertext update when a message with an empty ciphertext arrives. The FIPS modules in 4.0, 3.6, 3.5, 3.4, and 3.0 are not affected by this issue, as these algorithms are not FIPS approved and the affected code is outside the OpenSSL FIPS module boundary.
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 | openssl | sid | 3.6.5-1 | fixed |
| Debian | openssl | forky | 3.6.5-1 | fixed |
| Debian | openssl | trixie | 3.5.7-1~deb13u2 | fixed |
| Debian | openssl | trixie-security | 3.5.7-1~deb13u3 | fixed |
| Debian | openssl | bookworm | 3.0.20-1~deb12u2 | fixed |
| Debian | openssl | bookworm-security | 3.0.22-1~deb12u1 | fixed |
| Cpe | openssl | Not reported | 3.0.13-0ubuntu3.11 | fixed |
| Cpe | libssl-dev | Not reported | 3.0.13-0ubuntu3.11 | fixed |
| Cpe | libssl-doc | Not reported | 3.0.13-0ubuntu3.11 | fixed |
| Cpe | libssl3t64 | Not reported | 3.0.13-0ubuntu3.11 | fixed |
| Cpe | openssl | Not reported | 3.0.21 | fixed |
| Cpe | openssl | Not reported | 3.4.6 | fixed |
| Cpe | openssl | Not reported | 3.5.7 | fixed |
| Cpe | openssl | Not reported | 3.6.3 | fixed |
| Cpe | openssl | Not reported | Not reported | unknown |
| Cpe | openssl | Not reported | 3.0.20-1~deb12u2 | fixed |
| Alpine | openssl | 3.21 | 3.3.7-r1 | fixed |
| Alpine | openssl | 3.22 | 3.5.7-r0 | fixed |
| Alpine | openssl | 3.23 | 3.5.7-r0 | fixed |
| Alpine | openssl | 3.24 | 3.5.7-r0 | fixed |
Fixed-version evidence
| Distribution | Package | Type | Release | Fixed version | Urgency | Origin | Bugs |
|---|---|---|---|---|---|---|---|
| Debian | openssl | source | sid | 3.6.3-1 | not yet assigned | Not reported | [1139674] |
| Debian | openssl | source | forky | 3.6.3-1 | not yet assigned | Not reported | [1139674] |
| Debian | openssl | source | trixie | 3.5.6-1~deb13u2 | not yet assigned | Not reported | [1139674] |
| Debian | openssl | source | bookworm | 3.0.20-1~deb12u2 | not yet assigned | Not reported | [1139674] |
| Cpe | openssl | cpe | Not reported | 3.0.13-0ubuntu3.11 | Not reported | Not reported | Not reported |
| Cpe | libssl-dev | cpe | Not reported | 3.0.13-0ubuntu3.11 | Not reported | Not reported | Not reported |
| Cpe | libssl-doc | cpe | Not reported | 3.0.13-0ubuntu3.11 | Not reported | Not reported | Not reported |
| Cpe | libssl3t64 | cpe | Not reported | 3.0.13-0ubuntu3.11 | Not reported | Not reported | Not reported |
| Cpe | openssl | cpe | Not reported | 3.0.21 | Not reported | Not reported | Not reported |
| Cpe | openssl | cpe | Not reported | 3.4.6 | Not reported | Not reported | Not reported |
| Cpe | openssl | cpe | Not reported | 3.5.7 | Not reported | Not reported | Not reported |
| Cpe | openssl | cpe | Not reported | 3.6.3 | Not reported | Not reported | Not reported |
| Cpe | openssl | cpe | Not reported | 3.0.20-1~deb12u2 | Not reported | Not reported | Not reported |
| Alpine | openssl | apk | 3.21 | 3.3.7-r1 | Not reported | ALPINE-CVE-2026-45446 | Not reported |
| Alpine | openssl | apk | 3.22 | 3.5.7-r0 | Not reported | ALPINE-CVE-2026-45446 | Not reported |
| Alpine | openssl | apk | 3.23 | 3.5.7-r0 | Not reported | ALPINE-CVE-2026-45446 | Not reported |
| Alpine | openssl | apk | 3.24 | 3.5.7-r0 | Not reported | ALPINE-CVE-2026-45446 | Not reported |
OpenFactory catalog packages
Matching against OpenFactory catalog package versions is in progress.
[Debian 12 (Bookworm)]
- [libssl3]Unknown
Source package: [openssl]
Details (6)
3.0.20-1~deb12u2· amd64 · bookwormFixed · Fixed:
3.0.20-1~deb12u2nvd · openssl · debian · bookworm; nvd · openssl · debian · 12
3.0.20-1~deb12u2· arm64 · bookwormFixed · Fixed:
3.0.20-1~deb12u2nvd · openssl · debian · bookworm; nvd · openssl · debian · 12
3.0.20-1~deb12u2· amd64 · bookworm-securityFixed · Fixed:
3.0.20-1~deb12u2nvd · openssl · debian · bookworm; nvd · openssl · debian · 12
3.0.20-1~deb12u2· arm64 · bookworm-securityFixed · Fixed:
3.0.20-1~deb12u2nvd · openssl · debian · bookworm; nvd · openssl · debian · 12
3.0.17-1~deb12u2· amd64 · bookworm-updatesAffected · Fixed:
3.0.20-1~deb12u2nvd · openssl · debian · bookworm; nvd · openssl · debian · 12
3.0.17-1~deb12u2· arm64 · bookworm-updatesAffected · Fixed:
3.0.20-1~deb12u2nvd · openssl · debian · bookworm; nvd · openssl · debian · 12
- [libssl-dev]Unknown
Source package: [openssl]
Details (6)
3.0.20-1~deb12u2· amd64 · bookwormFixed · Fixed:
3.0.20-1~deb12u2nvd · openssl · debian · bookworm; nvd · openssl · debian · 12
3.0.20-1~deb12u2· arm64 · bookwormFixed · Fixed:
3.0.20-1~deb12u2nvd · openssl · debian · bookworm; nvd · openssl · debian · 12
3.0.20-1~deb12u2· amd64 · bookworm-securityFixed · Fixed:
3.0.20-1~deb12u2nvd · openssl · debian · bookworm; nvd · openssl · debian · 12
3.0.20-1~deb12u2· arm64 · bookworm-securityFixed · Fixed:
3.0.20-1~deb12u2nvd · openssl · debian · bookworm; nvd · openssl · debian · 12
3.0.17-1~deb12u2· amd64 · bookworm-updatesAffected · Fixed:
3.0.20-1~deb12u2nvd · openssl · debian · bookworm; nvd · openssl · debian · 12
3.0.17-1~deb12u2· arm64 · bookworm-updatesAffected · Fixed:
3.0.20-1~deb12u2nvd · openssl · debian · bookworm; nvd · openssl · debian · 12
- [libssl-doc]Unknown
Source package: [openssl]
Details (6)
3.0.20-1~deb12u2· all · bookwormFixed · Fixed:
3.0.20-1~deb12u2nvd · openssl · debian · bookworm; nvd · openssl · debian · 12
3.0.20-1~deb12u2· all · bookwormFixed · Fixed:
3.0.20-1~deb12u2nvd · openssl · debian · bookworm; nvd · openssl · debian · 12
3.0.20-1~deb12u2· all · bookworm-securityFixed · Fixed:
3.0.20-1~deb12u2nvd · openssl · debian · bookworm; nvd · openssl · debian · 12
3.0.20-1~deb12u2· all · bookworm-securityFixed · Fixed:
3.0.20-1~deb12u2nvd · openssl · debian · bookworm; nvd · openssl · debian · 12
3.0.17-1~deb12u2· all · bookworm-updatesAffected · Fixed:
3.0.20-1~deb12u2nvd · openssl · debian · bookworm; nvd · openssl · debian · 12
3.0.17-1~deb12u2· all · bookworm-updatesAffected · Fixed:
3.0.20-1~deb12u2nvd · openssl · debian · bookworm; nvd · openssl · debian · 12
- [openssl]Unknown
Details (6)
3.0.20-1~deb12u2· amd64 · bookwormFixed · Fixed:
3.0.20-1~deb12u2nvd · openssl · debian · bookworm; nvd · openssl · debian · 12
3.0.20-1~deb12u2· arm64 · bookwormFixed · Fixed:
3.0.20-1~deb12u2nvd · openssl · debian · bookworm; nvd · openssl · debian · 12
3.0.20-1~deb12u2· amd64 · bookworm-securityFixed · Fixed:
3.0.20-1~deb12u2nvd · openssl · debian · bookworm; nvd · openssl · debian · 12
3.0.20-1~deb12u2· arm64 · bookworm-securityFixed · Fixed:
3.0.20-1~deb12u2nvd · openssl · debian · bookworm; nvd · openssl · debian · 12
3.0.17-1~deb12u2· amd64 · bookworm-updatesAffected · Fixed:
3.0.20-1~deb12u2nvd · openssl · debian · bookworm; nvd · openssl · debian · 12
3.0.17-1~deb12u2· arm64 · bookworm-updatesAffected · Fixed:
3.0.20-1~deb12u2nvd · openssl · debian · bookworm; nvd · openssl · debian · 12
[Debian 13 (Trixie)]
- [libssl3t64]Unknown
Source package: [openssl]
Details (6)
3.5.6-1~deb13u2· amd64 · trixieFixed · Fixed:
3.5.6-1~deb13u2nvd · openssl · debian · 13
3.5.6-1~deb13u2· arm64 · trixieFixed · Fixed:
3.5.6-1~deb13u2nvd · openssl · debian · 13
3.5.6-1~deb13u2· amd64 · trixie-security · Historical versionFixed · Fixed:
3.5.6-1~deb13u2nvd · openssl · debian · 13
3.5.7-1~deb13u2· amd64 · trixie-security · Historical versionFixed · Fixed:
3.5.6-1~deb13u2nvd · openssl · debian · 13
3.5.7-1~deb13u2· arm64 · trixie-securityFixed · Fixed:
3.5.6-1~deb13u2nvd · openssl · debian · 13
3.5.7-1~deb13u3· amd64 · trixie-securityFixed · Fixed:
3.5.6-1~deb13u2nvd · openssl · debian · 13
- [libssl-dev]Unknown
Source package: [openssl]
Details (6)
3.5.6-1~deb13u2· amd64 · trixieFixed · Fixed:
3.5.6-1~deb13u2nvd · openssl · debian · 13
3.5.6-1~deb13u2· arm64 · trixieFixed · Fixed:
3.5.6-1~deb13u2nvd · openssl · debian · 13
3.5.6-1~deb13u2· amd64 · trixie-security · Historical versionFixed · Fixed:
3.5.6-1~deb13u2nvd · openssl · debian · 13
3.5.7-1~deb13u2· amd64 · trixie-security · Historical versionFixed · Fixed:
3.5.6-1~deb13u2nvd · openssl · debian · 13
3.5.7-1~deb13u2· arm64 · trixie-securityFixed · Fixed:
3.5.6-1~deb13u2nvd · openssl · debian · 13
3.5.7-1~deb13u3· amd64 · trixie-securityFixed · Fixed:
3.5.6-1~deb13u2nvd · openssl · debian · 13
- [libssl-doc]Unknown
Source package: [openssl]
Details (6)
3.5.6-1~deb13u2· all · trixieFixed · Fixed:
3.5.6-1~deb13u2nvd · openssl · debian · 13
3.5.6-1~deb13u2· all · trixieFixed · Fixed:
3.5.6-1~deb13u2nvd · openssl · debian · 13
3.5.6-1~deb13u2· all · trixie-security · Historical versionFixed · Fixed:
3.5.6-1~deb13u2nvd · openssl · debian · 13
3.5.7-1~deb13u2· all · trixie-securityFixed · Fixed:
3.5.6-1~deb13u2nvd · openssl · debian · 13
3.5.7-1~deb13u2· all · trixie-security · Historical versionFixed · Fixed:
3.5.6-1~deb13u2nvd · openssl · debian · 13
3.5.7-1~deb13u3· all · trixie-securityFixed · Fixed:
3.5.6-1~deb13u2nvd · openssl · debian · 13
- [openssl]Unknown
Details (6)
3.5.6-1~deb13u2· amd64 · trixieFixed · Fixed:
3.5.6-1~deb13u2nvd · openssl · debian · 13
3.5.6-1~deb13u2· arm64 · trixieFixed · Fixed:
3.5.6-1~deb13u2nvd · openssl · debian · 13
3.5.6-1~deb13u2· amd64 · trixie-security · Historical versionFixed · Fixed:
3.5.6-1~deb13u2nvd · openssl · debian · 13
3.5.7-1~deb13u2· amd64 · trixie-security · Historical versionFixed · Fixed:
3.5.6-1~deb13u2nvd · openssl · debian · 13
3.5.7-1~deb13u2· arm64 · trixie-securityFixed · Fixed:
3.5.6-1~deb13u2nvd · openssl · debian · 13
3.5.7-1~deb13u3· amd64 · trixie-securityFixed · Fixed:
3.5.6-1~deb13u2nvd · openssl · debian · 13
- [openssl-provider-fips]Unknown
Source package: [openssl]
Details (6)
3.5.6-1~deb13u2· amd64 · trixieFixed · Fixed:
3.5.6-1~deb13u2nvd · openssl · debian · 13
3.5.6-1~deb13u2· arm64 · trixieFixed · Fixed:
3.5.6-1~deb13u2nvd · openssl · debian · 13
3.5.6-1~deb13u2· amd64 · trixie-security · Historical versionFixed · Fixed:
3.5.6-1~deb13u2nvd · openssl · debian · 13
3.5.7-1~deb13u2· amd64 · trixie-security · Historical versionFixed · Fixed:
3.5.6-1~deb13u2nvd · openssl · debian · 13
3.5.7-1~deb13u2· arm64 · trixie-securityFixed · Fixed:
3.5.6-1~deb13u2nvd · openssl · debian · 13
3.5.7-1~deb13u3· amd64 · trixie-securityFixed · Fixed:
3.5.6-1~deb13u2nvd · openssl · debian · 13
- [openssl-provider-legacy]Unknown
Source package: [openssl]
Details (6)
3.5.6-1~deb13u2· amd64 · trixieFixed · Fixed:
3.5.6-1~deb13u2nvd · openssl · debian · 13
3.5.6-1~deb13u2· arm64 · trixieFixed · Fixed:
3.5.6-1~deb13u2nvd · openssl · debian · 13
3.5.6-1~deb13u2· amd64 · trixie-security · Historical versionFixed · Fixed:
3.5.6-1~deb13u2nvd · openssl · debian · 13
3.5.7-1~deb13u2· amd64 · trixie-security · Historical versionFixed · Fixed:
3.5.6-1~deb13u2nvd · openssl · debian · 13
3.5.7-1~deb13u2· arm64 · trixie-securityFixed · Fixed:
3.5.6-1~deb13u2nvd · openssl · debian · 13
3.5.7-1~deb13u3· amd64 · trixie-securityFixed · Fixed:
3.5.6-1~deb13u2nvd · openssl · debian · 13
Observed:
References
- [https://access.redhat.com/errata/RHSA-2026:34102]
- [https://ftp.suse.com/pub/projects/security/]
- [https://nvd.nist.gov/vuln/detail/CVE-2026-45446]
- [https://osv.dev/vulnerability/ALPINE-CVE-2026-45446]
- [https://osv.dev/vulnerability/DEBIAN-CVE-2026-45446]
- [https://security-tracker.debian.org/tracker/CVE-2026-45446]
- [https://ubuntu.com/security/notices/USN-8414-1]
- [https://wid.cert-bund.de/.well-known/csaf/white/2026/wid-sec-w-2026-2455.json]
[CERT-Bund public advisories] · [Debian Security Tracker] · [FIRST EPSS] · [National Vulnerability Database (NVD)] · [OSV Package Vulnerability Database] · [Red Hat security advisories and VEX] · [SUSE security advisories and VEX] · [Ubuntu Security Notices (USN)]