Answer in brief
CVE-2023-0286 records a High severity (CVSS 7.4) vulnerability in X.400 address type confusion in X.509 GeneralName. The current sources do not mark it as known exploited. The current feed maps openssl-src (crates.io), openssl-src (crates.io), Siemens/BFCClient (generic), OpenSSL/OpenSSL (generic) and additional mapped packages. Check affected ranges and fixed versions before updating.
Analysis pending evidence review
HOL Guard separates source facts from reviewed analysis. See the methodology.
CVSS is 7.4. The current sources do not mark it as known exploited. Treat this as a source-backed prioritization signal, not a statement about your environment.
Analysis status
Analysis pending evidence review
Factual feed record only; HOL analysis is not approved for indexing. Read the methodology.
The current feed maps openssl-src (crates.io), openssl-src (crates.io), Siemens/BFCClient (generic), OpenSSL/OpenSSL (generic) and additional mapped packages. Check affected ranges and fixed versions before updating.
| Package | Affected range | Fixed version |
|---|---|---|
| openssl-srccrates.io | >=0 <111.25.0 | 111.25.0 |
| openssl-srccrates.io | >=300.0.0 <300.0.12 | 300.0.12 |
| Siemens/BFCClientgeneric | >=0 <V2.17 | V2.17 |
| OpenSSL/OpenSSLgeneric | >=3.0.0 <3.0.8 || >=1.1.1 <1.1.1t || >=1.0.2 <1.0.2zg | 3.0.8, 1.1.1t, 1.0.2zg |
| Siemens/RUGGEDCOM APE1808generic | >=0 <* | * |
| Siemens/SCALANCE W1750D (JP)generic | >=0 <V8.10.0.9 | V8.10.0.9 |
| Siemens/SCALANCE W1750D (ROW)generic | >=0 <V8.10.0.9 | V8.10.0.9 |
| Siemens/SCALANCE W1750D (USA)generic | >=0 <V8.10.0.9 | V8.10.0.9 |
| Siemens/SIMATIC S7-1500 CPU 1518-4 PN/DP MFPgeneric | >=V3.1.0 <V3.1.5 | V3.1.5 |
| Siemens/SIMATIC S7-1500 CPU 1518F-4 PN/DP MFPgeneric | >=V3.1.0 <V3.1.5 | V3.1.5 |
| Siemens/SIMATIC S7-1500 TM MFP - GNU/Linux subsystemgeneric | >=0 <V1.1 | V1.1 |
| Siemens/SIPLUS S7-1500 CPU 1518-4 PN/DP MFPgeneric | >=V3.1.0 <V3.1.5 | V3.1.5 |
| cryptographypypi | >=0.8.1 <39.0.1 | 39.0.1 |
Published upstream
Feb 8, 2023
Evidence: source:cvelist:source_dates:source-dates:recordSource modified
Oct 14, 2026
Evidence: source:cvelist:source_dates:source-dates:recordFirst seen by HOL
Sep 10, 2026
There is a type confusion vulnerability relating to X.400 address processing inside an X.509 GeneralName. X.400 addresses were parsed as an ASN1_STRING but the public structure definition for GENERAL_NAME incorrectly specified the type of the x400Address field as ASN1_TYPE. This field is subsequently interpreted by the OpenSSL function GENERAL_NAME_cmp as an ASN1_TYPE rather than an ASN1_STRING. When CRL checking is enabled (i.e. the application sets the X509_V_FLAG_CRL_CHECK flag), this vulnerability may allow an attacker to pass arbitrary pointers to a memcmp call, enabling them to read memory contents or enact a denial of service. In most cases, the attack requires the attacker to provide both the certificate chain and CRL, neither of which need to have a valid signature. If the attacker only controls one of these inputs, the other input must already contain an X.400 address as a CRL distribution point, which is uncommon. As such, this vulnerability is most likely to only affect applications which have implemented their own functionality for retrieving CRLs over a network.
Quoted source text, attributed separately from HOL analysis.