boxscore/security
CVE · referencelatest edition

Reference page — cumulative record through Monday, October 19, 2026 UTC. Reference pages update as the archive grows; only dated daily editions are immutable pages of record.

CVE-2019-1563

OpenSSL OpenSSL — Padding Oracle in PKCS7_dataDecode and CMS_decrypt_set1_pkey
  AV  AC  PR  UI  S  C  I  A   CVSS    EPSS   %ile   KEV
   N   H   N   N  U  L  N  N    3.7   .0384   90.0     —
AFFECTED
  Product  Versions                                           Fixed
  OpenSSL  Fixed in OpenSSL 1.1.1d (Affected 1.1.1-1.1.1c) –  —
TIMELINE
  Nov 28  Reserved by openssl
  Sep 10  Published (CNA: openssl)
  Oct 8   ENRICHED — CVE-2019-1563 (OpenSSL). Received CVSS 3.7 and CPE data from NVD.
CWE-203, CWE-327 · CNA: openssl · CVSS v3.1 · 30 references · NVD status: Modified

Description

In situations where an attacker receives automated notification of the success or failure of a decryption attempt an attacker, after sending a very large number of messages to be decrypted, can recover a CMS/PKCS7 transported encryption key or decrypt any RSA encrypted message that was encrypted with the public RSA key, using a Bleichenbacher padding oracle attack. Applications are not affected if they use a certificate together with the private RSA key to the CMS_decrypt or PKCS7_decrypt functions to select the correct recipient info to decrypt. Fixed in OpenSSL 1.1.1d (Affected 1.1.1-1.1.1c). Fixed in OpenSSL 1.1.0l (Affected 1.1.0-1.1.0k). Fixed in OpenSSL 1.0.2t (Affected 1.0.2-1.0.2s).

Lifecycle

Complete event history — 3 events, chronological
DateEventDetail
November 28, 2018ReservedReserved by openssl
September 10, 2019PublishedPublished (CNA: openssl)
October 8, 2026ENRICHEDENRICHED — CVE-2019-1563 (OpenSSL). Received CVSS 3.7 and CPE data from NVD.

Affected

Affected products and packages — 1 row
VendorProduct / PackageEcosystemVersion introducedFixed
OpenSSLOpenSSL—Fixed in OpenSSL 1.1.1d (Affected 1.1.1-1.1.1c)—

Weaknesses

CWE-203 · CWE-327

References (30)

Related

Authoritative record: CVE-2019-1563 at cve.org

Vendors: openssl

Weaknesses: CWE-203 · CWE-327

About this page

This is a reference page, not a dated page of record. It assembles the complete lifecycle of CVE-2019-1563 from the CVE Program record, NVD enrichment, the CISA KEV catalog, EPSS, and OSV advisories. The box score's numbers (CVSS, EPSS, KEV status) are current as of Monday, October 19, 2026 UTC and are re-derived as the archive grows; only dated daily editions are immutable pages of record. The authoritative source for this identifier is cve.org.