openssl: untrusted sender DN used as format string in CMP response validation

A flaw was found in OpenSSL. A malicious CMP Certificate Management Protocol endpoint can send an unexpected distinguished name DN directly as the format string argument to ERRraisedata, causing the application to dereference and write to unrelated stack contents. This can lead to a crash in the...

SUSE CVE-2026-63073

Issue summary: OpenSSL CMP response validation passed an unexpected response sender distinguished name directly as the format string to ERRraisedata. Impact summary: A malicious or intercepted CMP endpoint can crash a CMP client that enforces an expected sender or uses a pinned server certificate...

openssl: untrusted sender DN used as format string in CMP response validation

A flaw was found in OpenSSL. A malicious CMP Certificate Management Protocol endpoint can send an unexpected distinguished name DN directly as the format string argument to ERRraisedata, causing the application to dereference and write to unrelated stack contents. This can lead to a crash in the...

CVE-2026-63073

A flaw was found in OpenSSL. A malicious CMP Certificate Management Protocol endpoint can send an unexpected distinguished name DN directly as the format string argument to ERRraisedata, causing the application to dereference and write to unrelated stack contents. This can lead to a crash in the...

Use of Externally-Controlled Format String

Overview Affected versions of this package are vulnerable to Use of Externally-Controlled Format String in osslcmpmsgcheckupdate in crypto/cmp/cmpvfy.c. An attacker can crash a CMP client by sending an unexpected response with a sender distinguished name containing format specifiers such as %s or...

ALPINE-CVE-2026-63073

Issue summary: OpenSSL CMP response validation passed an unexpected response sender distinguished name directly as the format string to ERRraisedata. Impact summary: A malicious or intercepted CMP endpoint can crash a CMP client that enforces an expected sender or uses a pinned server certificate...

CVE-2026-63073

Issue summary: OpenSSL CMP response validation passed an unexpected response sender distinguished name directly as the format string to ERRraisedata. Impact summary: A malicious or intercepted CMP endpoint can crash a CMP client that enforces an expected sender or uses a pinned server certificate...

CVE-2026-63073

Issue summary: OpenSSL CMP response validation passed an unexpected response sender distinguished name directly as the format string to ERRraisedata. Impact summary: A malicious or intercepted CMP endpoint can crash a CMP client that enforces an expected sender or uses a pinned server certificate...

CVE-2026-63073 Untrusted Sender DN Used as Format String in CMP Response Validation

Issue summary: OpenSSL CMP response validation passed an unexpected response sender distinguished name directly as the format string to ERRraisedata. Impact summary: A malicious or intercepted CMP endpoint can crash a CMP client that enforces an expected sender or uses a pinned server certificate...

CVE-2026-63073

OpenSSL CMP protocol validation contains a format string injection (CWE-134): ossl_cmp_msg_check_update() passes a peer-supplied sender distinguished name—after X509_NAME_oneline() conversion—directly as the format argument to ERR_raise_data(). A malicious or intercepted CMP endpoint can send a D...

CVE-2026-63073

Issue summary: OpenSSL CMP response validation passed an unexpected response sender distinguished name directly as the format string to ERRraisedata. Impact summary: A malicious or intercepted CMP endpoint can crash a CMP client that enforces an expected sender or uses a pinned server certificate...

EUVD-2026-65483

Issue summary: OpenSSL CMP response validation passed an unexpected response sender distinguished name directly as the format string to ERRraisedata. Impact summary: A malicious or intercepted CMP endpoint can crash a CMP client that enforces an expected sender or uses a pinned server certificate...

CVE-2026-63073 Untrusted Sender DN Used as Format String in CMP Response Validation

Issue summary: OpenSSL CMP response validation passed an unexpected response sender distinguished name directly as the format string to ERRraisedata. Impact summary: A malicious or intercepted CMP endpoint can crash a CMP client that enforces an expected sender or uses a pinned server certificate...

Untrusted Sender DN Used as Format String in CMP Response Validation

Issue summary: OpenSSL CMP response validation passed an unexpected response sender distinguished name directly as the format string to ERRraisedata. Impact summary: A malicious or intercepted CMP endpoint can crash a CMP client that enforces an expected sender or uses a pinned server certificate...

PT-2026-81304

Name of the Vulnerable Software and Affected Versions OpenSSL affected versions not specified Description An issue exists in the CMP response validation where the ossl cmp msg check update function converts a peer-supplied sender distinguished name using X509 NAME oneline and passes it directly a...