CVE catalog
CVE-2026-45447
Issue summary: A specially crafted PKCS#7 or S/MIME signed message could trigger a use-after-free during PKCS#7 signature verification. Impact summary: A use-after-free may result in process crashes,
- Severity
- High · CVSS 8.8
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H - Published
- Source
- [NVD] · [CVE record]
- EPSS
- 4.00% · Oct 22, 2026
Issue summary: A specially crafted PKCS#7 or S/MIME signed message could trigger a use-after-free during PKCS#7 signature verification. Impact summary: A use-after-free may result in process crashes, heap corruption, or potentially remote code execution. When processing a PKCS#7 or S/MIME signed message, if the SignedData digestAlgorithms field is present as an empty ASN.1 SET, OpenSSL may incorrectly free a caller-owned BIO during PKCS7_verify(). A subsequent use of the BIO by the calling application results in a use-after-free condition. In the common case this occurs when the application later calls BIO_free() on the BIO originally passed to PKCS7_verify(). Depending on allocator behavior and application-specific BIO usage patterns, this may result in a crash or other memory corruption. In some application contexts this may potentially be exploitable for remote code execution. Applications that process PKCS#7 or S/MIME signed messages using OpenSSL PKCS#7 APIs may be affected. Applications using the CMS APIs for this processing are not affected. The FIPS modules in 4.0, 3.6, 3.5, 3.4, and 3.0 are not affected by this issue, as 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 | 1.0.2zq | fixed |
| Cpe | openssl | Not reported | 1.1.1zh | 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 |
| Cpe | openssl | Not reported | Not reported | unknown |
| 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 |
| Suse | openssl-1_1-livepatches | linux enterprise live patching 15 sp4 | 0.6-150400.3.20.1 | fixed |
| Suse | openssl-1_1-livepatches | linux enterprise live patching 15 sp6 | 0.6-150600.11.6.1 | fixed |
| Suse | openssl-1_1-livepatches | linux enterprise live patching 15 sp5 | 0.6-150500.6.14.1 | fixed |
| Suse | openssl-1_1-livepatches | linux enterprise live patching 15 sp7 | 0.6-150700.13.6.1 | 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 | 1.0.2zq | Not reported | Not reported | Not reported |
| Cpe | openssl | cpe | Not reported | 1.1.1zh | 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-2026-45447 | Not reported |
| Alpine | openssl | apk | 3.22 | 3.5.7-r0 | Not reported | ALPINE-CVE-2026-45447 | Not reported |
| Alpine | openssl | apk | 3.23 | 3.5.7-r0 | Not reported | ALPINE-CVE-2026-45447 | Not reported |
| Alpine | openssl | apk | 3.24 | 3.5.7-r0 | Not reported | ALPINE-CVE-2026-45447 | Not reported |
| Suse | openssl-1_1-livepatches | rpm | linux enterprise live patching 15 sp4 | 0.6-150400.3.20.1 | Not reported | SUSE-SU-2026:2621-1 | Not reported |
| Suse | openssl-1_1-livepatches | rpm | linux enterprise live patching 15 sp6 | 0.6-150600.11.6.1 | Not reported | SUSE-SU-2026:2410-1 | Not reported |
| Suse | openssl-1_1-livepatches | rpm | linux enterprise live patching 15 sp5 | 0.6-150500.6.14.1 | Not reported | SUSE-SU-2026:2409-1 | Not reported |
| Suse | openssl-1_1-livepatches | rpm | linux enterprise live patching 15 sp7 | 0.6-150700.13.6.1 | Not reported | SUSE-SU-2026:2412-1 | 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/csaf/rhsa-2026_25237.json]
- [https://nvd.nist.gov/vuln/detail/CVE-2026-45447]
- [https://osv.dev/vulnerability/ALPINE-CVE-2026-45447]
- [https://osv.dev/vulnerability/DEBIAN-CVE-2026-45447]
- [https://osv.dev/vulnerability/SUSE-SU-2026:2409-1]
- [https://osv.dev/vulnerability/SUSE-SU-2026:2410-1]
- [https://osv.dev/vulnerability/SUSE-SU-2026:2412-1]
- [https://osv.dev/vulnerability/SUSE-SU-2026:2621-1]
- [https://security-tracker.debian.org/tracker/CVE-2026-45447]
- [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)]