Catalogo CVE
CVE-2026-63073
Issue summary: OpenSSL CMP response validation passed an unexpected response sender distinguished name directly as the format string to `ERR_raise_data()`. Impact summary: A malicious or intercepted
- Gravità
- Critical · CVSS 9.8
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H - Published
- Updated
- Source
- [NVD] · [CVE record]
- EPSS
- 1.16% · Oct 22, 2026
Issue summary: OpenSSL CMP response validation passed an unexpected response sender distinguished name directly as the format string to `ERR_raise_data()`. Impact summary: A malicious or intercepted CMP endpoint can crash a CMP client that enforces an expected sender or uses a pinned server certificate whose subject becomes the default expected sender. CWE: CWE-134 (Use of Externally-Controlled Format String) Description: When validating a received CMP message, ossl_cmp_msg_check_update() converts the peer-supplied sender distinguished name with X509_NAME_oneline() and passes it directly as the format argument to ERR_raise_data(). Percent characters survive the conversion, so a sender DN such as "CN=%s%n" reaches BIO_vsnprintf() as an attacker-controlled format string with no matching variadic arguments. This path is only reached when the caller configures an expected sender or pins a server certificate, which is the normal configuration for a CMP client validating server responses. Since the attacker controls the format string but none of the variadic arguments, such specifiers as %s and %n dereference or write through unrelated stack contents and crash the client. The reliable consequence is a denial of service, when the response comes from a malicious or intercepted CMP endpoint. There is no controlled memory write, arbitrary-address read, or reliable path to remote code execution. FIPS impact: no No FIPS modules are affected by this issue, as the CMP protocol implementation 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 | not affected |
| Debian | openssl | bookworm-security | 3.0.22-1~deb12u1 | not affected |
| Ubuntu | openssl | noble | 3.0.13-0ubuntu3.15 | fixed |
| Ubuntu | libssl-dev | noble | 3.0.13-0ubuntu3.15 | fixed |
| Ubuntu | libssl-doc | noble | 3.0.13-0ubuntu3.15 | fixed |
| Ubuntu | libssl3t64 | noble | 3.0.13-0ubuntu3.15 | fixed |
| Cpe | openssl | Not reported | 4.0.2 | fixed |
| Alpine | openssl | 3.21 | 3.3.7-r1 | fixed |
| Alpine | openssl | 3.22 | 3.5.8-r0 | fixed |
| Alpine | openssl | 3.23 | 3.5.8-r0 | fixed |
| Alpine | openssl | 3.24 | 3.5.8-r0 | fixed |
Fixed-version evidence
| Distribution | Package | Type | Release | Fixed version | Urgency | Origin | Bugs |
|---|---|---|---|---|---|---|---|
| Debian | openssl | source | sid | 3.6.4-1 | not yet assigned | Not reported | Not reported |
| Debian | openssl | source | forky | 3.6.4-1 | not yet assigned | Not reported | Not reported |
| Debian | openssl | source | trixie | 3.5.7-1~deb13u2 | not yet assigned | Not reported | Not reported |
| Debian | openssl | source | bookworm | Not affected | unimportant | Not reported | Not reported |
| Ubuntu | openssl | deb | noble | 3.0.13-0ubuntu3.15 | Not reported | Not reported | Not reported |
| Ubuntu | libssl-dev | deb | noble | 3.0.13-0ubuntu3.15 | Not reported | Not reported | Not reported |
| Ubuntu | libssl-doc | deb | noble | 3.0.13-0ubuntu3.15 | Not reported | Not reported | Not reported |
| Ubuntu | libssl3t64 | deb | noble | 3.0.13-0ubuntu3.15 | Not reported | Not reported | Not reported |
| Cpe | openssl | cpe | Not reported | 4.0.2 | Not reported | NVD-CVE-2026-63073 | Not reported |
| Alpine | openssl | apk | 3.21 | 3.3.7-r1 | Not reported | ALPINE-CVE-2026-63073 | Not reported |
| Alpine | openssl | apk | 3.22 | 3.5.8-r0 | Not reported | ALPINE-CVE-2026-63073 | Not reported |
| Alpine | openssl | apk | 3.23 | 3.5.8-r0 | Not reported | ALPINE-CVE-2026-63073 | Not reported |
| Alpine | openssl | apk | 3.24 | 3.5.8-r0 | Not reported | ALPINE-CVE-2026-63073 | Not reported |
OpenFactory catalog packages
L’associazione dei pacchetti è in corso.
[Debian 12 (Bookworm)]
- [libssl3]Sconosciuto
Pacchetto sorgente: [openssl]
Dettagli (6)
3.0.20-1~deb12u2· amd64 · bookwormNon interessata
nvd · openssl · debian · bookworm
3.0.20-1~deb12u2· arm64 · bookwormNon interessata
nvd · openssl · debian · bookworm
3.0.20-1~deb12u2· amd64 · bookworm-securityNon interessata
nvd · openssl · debian · bookworm
3.0.20-1~deb12u2· arm64 · bookworm-securityNon interessata
nvd · openssl · debian · bookworm
3.0.17-1~deb12u2· amd64 · bookworm-updatesNon interessata
nvd · openssl · debian · bookworm
3.0.17-1~deb12u2· arm64 · bookworm-updatesNon interessata
nvd · openssl · debian · bookworm
- [libssl-dev]Sconosciuto
Pacchetto sorgente: [openssl]
Dettagli (6)
3.0.20-1~deb12u2· amd64 · bookwormNon interessata
nvd · openssl · debian · bookworm
3.0.20-1~deb12u2· arm64 · bookwormNon interessata
nvd · openssl · debian · bookworm
3.0.20-1~deb12u2· amd64 · bookworm-securityNon interessata
nvd · openssl · debian · bookworm
3.0.20-1~deb12u2· arm64 · bookworm-securityNon interessata
nvd · openssl · debian · bookworm
3.0.17-1~deb12u2· amd64 · bookworm-updatesNon interessata
nvd · openssl · debian · bookworm
3.0.17-1~deb12u2· arm64 · bookworm-updatesNon interessata
nvd · openssl · debian · bookworm
- [libssl-doc]Sconosciuto
Pacchetto sorgente: [openssl]
Dettagli (6)
3.0.20-1~deb12u2· all · bookwormNon interessata
nvd · openssl · debian · bookworm
3.0.20-1~deb12u2· all · bookwormNon interessata
nvd · openssl · debian · bookworm
3.0.20-1~deb12u2· all · bookworm-securityNon interessata
nvd · openssl · debian · bookworm
3.0.20-1~deb12u2· all · bookworm-securityNon interessata
nvd · openssl · debian · bookworm
3.0.17-1~deb12u2· all · bookworm-updatesNon interessata
nvd · openssl · debian · bookworm
3.0.17-1~deb12u2· all · bookworm-updatesNon interessata
nvd · openssl · debian · bookworm
- [openssl]Sconosciuto
Dettagli (6)
3.0.20-1~deb12u2· amd64 · bookwormNon interessata
nvd · openssl · debian · bookworm
3.0.20-1~deb12u2· arm64 · bookwormNon interessata
nvd · openssl · debian · bookworm
3.0.20-1~deb12u2· amd64 · bookworm-securityNon interessata
nvd · openssl · debian · bookworm
3.0.20-1~deb12u2· arm64 · bookworm-securityNon interessata
nvd · openssl · debian · bookworm
3.0.17-1~deb12u2· amd64 · bookworm-updatesNon interessata
nvd · openssl · debian · bookworm
3.0.17-1~deb12u2· arm64 · bookworm-updatesNon interessata
nvd · openssl · debian · bookworm
[Debian 13 (Trixie)]
- [libssl3t64]Sconosciuto
Pacchetto sorgente: [openssl]
Dettagli (6)
3.5.6-1~deb13u2· amd64 · trixieInteressata · Corretta:
3.5.7-1~deb13u2nvd · openssl · debian · 13
3.5.6-1~deb13u2· arm64 · trixieInteressata · Corretta:
3.5.7-1~deb13u2nvd · openssl · debian · 13
3.5.6-1~deb13u2· amd64 · trixie-security · Historical versionInteressata · Corretta:
3.5.7-1~deb13u2nvd · openssl · debian · 13
3.5.7-1~deb13u2· amd64 · trixie-security · Historical versionCorretta · Corretta:
3.5.7-1~deb13u2nvd · openssl · debian · 13
3.5.7-1~deb13u2· arm64 · trixie-securityCorretta · Corretta:
3.5.7-1~deb13u2nvd · openssl · debian · 13
3.5.7-1~deb13u3· amd64 · trixie-securityCorretta · Corretta:
3.5.7-1~deb13u2nvd · openssl · debian · 13
- [libssl-dev]Sconosciuto
Pacchetto sorgente: [openssl]
Dettagli (6)
3.5.6-1~deb13u2· amd64 · trixieInteressata · Corretta:
3.5.7-1~deb13u2nvd · openssl · debian · 13
3.5.6-1~deb13u2· arm64 · trixieInteressata · Corretta:
3.5.7-1~deb13u2nvd · openssl · debian · 13
3.5.6-1~deb13u2· amd64 · trixie-security · Historical versionInteressata · Corretta:
3.5.7-1~deb13u2nvd · openssl · debian · 13
3.5.7-1~deb13u2· amd64 · trixie-security · Historical versionCorretta · Corretta:
3.5.7-1~deb13u2nvd · openssl · debian · 13
3.5.7-1~deb13u2· arm64 · trixie-securityCorretta · Corretta:
3.5.7-1~deb13u2nvd · openssl · debian · 13
3.5.7-1~deb13u3· amd64 · trixie-securityCorretta · Corretta:
3.5.7-1~deb13u2nvd · openssl · debian · 13
- [libssl-doc]Sconosciuto
Pacchetto sorgente: [openssl]
Dettagli (6)
3.5.6-1~deb13u2· all · trixieInteressata · Corretta:
3.5.7-1~deb13u2nvd · openssl · debian · 13
3.5.6-1~deb13u2· all · trixieInteressata · Corretta:
3.5.7-1~deb13u2nvd · openssl · debian · 13
3.5.6-1~deb13u2· all · trixie-security · Historical versionInteressata · Corretta:
3.5.7-1~deb13u2nvd · openssl · debian · 13
3.5.7-1~deb13u2· all · trixie-securityCorretta · Corretta:
3.5.7-1~deb13u2nvd · openssl · debian · 13
3.5.7-1~deb13u2· all · trixie-security · Historical versionCorretta · Corretta:
3.5.7-1~deb13u2nvd · openssl · debian · 13
3.5.7-1~deb13u3· all · trixie-securityCorretta · Corretta:
3.5.7-1~deb13u2nvd · openssl · debian · 13
- [openssl]Sconosciuto
Dettagli (6)
3.5.6-1~deb13u2· amd64 · trixieInteressata · Corretta:
3.5.7-1~deb13u2nvd · openssl · debian · 13
3.5.6-1~deb13u2· arm64 · trixieInteressata · Corretta:
3.5.7-1~deb13u2nvd · openssl · debian · 13
3.5.6-1~deb13u2· amd64 · trixie-security · Historical versionInteressata · Corretta:
3.5.7-1~deb13u2nvd · openssl · debian · 13
3.5.7-1~deb13u2· amd64 · trixie-security · Historical versionCorretta · Corretta:
3.5.7-1~deb13u2nvd · openssl · debian · 13
3.5.7-1~deb13u2· arm64 · trixie-securityCorretta · Corretta:
3.5.7-1~deb13u2nvd · openssl · debian · 13
3.5.7-1~deb13u3· amd64 · trixie-securityCorretta · Corretta:
3.5.7-1~deb13u2nvd · openssl · debian · 13
- [openssl-provider-fips]Sconosciuto
Pacchetto sorgente: [openssl]
Dettagli (6)
3.5.6-1~deb13u2· amd64 · trixieInteressata · Corretta:
3.5.7-1~deb13u2nvd · openssl · debian · 13
3.5.6-1~deb13u2· arm64 · trixieInteressata · Corretta:
3.5.7-1~deb13u2nvd · openssl · debian · 13
3.5.6-1~deb13u2· amd64 · trixie-security · Historical versionInteressata · Corretta:
3.5.7-1~deb13u2nvd · openssl · debian · 13
3.5.7-1~deb13u2· amd64 · trixie-security · Historical versionCorretta · Corretta:
3.5.7-1~deb13u2nvd · openssl · debian · 13
3.5.7-1~deb13u2· arm64 · trixie-securityCorretta · Corretta:
3.5.7-1~deb13u2nvd · openssl · debian · 13
3.5.7-1~deb13u3· amd64 · trixie-securityCorretta · Corretta:
3.5.7-1~deb13u2nvd · openssl · debian · 13
- [openssl-provider-legacy]Sconosciuto
Pacchetto sorgente: [openssl]
Dettagli (6)
3.5.6-1~deb13u2· amd64 · trixieInteressata · Corretta:
3.5.7-1~deb13u2nvd · openssl · debian · 13
3.5.6-1~deb13u2· arm64 · trixieInteressata · Corretta:
3.5.7-1~deb13u2nvd · openssl · debian · 13
3.5.6-1~deb13u2· amd64 · trixie-security · Historical versionInteressata · Corretta:
3.5.7-1~deb13u2nvd · openssl · debian · 13
3.5.7-1~deb13u2· amd64 · trixie-security · Historical versionCorretta · Corretta:
3.5.7-1~deb13u2nvd · openssl · debian · 13
3.5.7-1~deb13u2· arm64 · trixie-securityCorretta · Corretta:
3.5.7-1~deb13u2nvd · openssl · debian · 13
3.5.7-1~deb13u3· amd64 · trixie-securityCorretta · Corretta:
3.5.7-1~deb13u2nvd · openssl · debian · 13
Osservato:
Riferimenti
- [https://access.redhat.com/errata/RHSA-2026:67154]
- [https://ftp.suse.com/pub/projects/security/]
- [https://nvd.nist.gov/vuln/detail/CVE-2026-63073]
- [https://osv.dev/vulnerability/ALPINE-CVE-2026-63073]
- [https://osv.dev/vulnerability/DEBIAN-CVE-2026-63073]
- [https://security-tracker.debian.org/tracker/CVE-2026-63073]
- [https://ubuntu.com/security/notices/USN-8678-1]
- [https://wid.cert-bund.de/.well-known/csaf/white/2026/wid-sec-w-2026-3034.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)]