[{"vendor":"Siemens","product":"SIMATIC CN 4100","defaultStatus":"unknown","versions":[{"version":"0","lessThan":"V5.0","versionType":"custom","status":"affected"}]},{"vendor":"Siemens","product":"SIMATIC S7-1500 TM MFP - GNU/Linux subsystem","defaultStatus":"unknown","versions":[{"version":"0","lessThan":"*","versionType":"custom","status":"affected"}]}]

{"timestamp":"2026-04-09T03:56:07.962224Z","id":"CVE-2026-28387","options":[{"exploitation":"none"},{"automatable":"no"},{"technicalImpact":"total"}],"role":"CISA Coordinator","version":"2.0.3"}

[{"vendor":"OpenSSL","product":"OpenSSL","defaultStatus":"unaffected","versions":[{"version":"3.6.0","lessThan":"3.6.2","versionType":"semver","status":"affected"},{"version":"3.5.0","lessThan":"3.5.6","versionType":"semver","status":"affected"},{"version":"3.4.0","lessThan":"3.4.5","versionType":"semver","status":"affected"},{"version":"3.3.0","lessThan":"3.3.7","versionType":"semver","status":"affected"},{"version":"3.0.0","lessThan":"3.0.20","versionType":"semver","status":"affected"},{"version":"1.1.1","lessThan":"1.1.1zg","versionType":"custom","status":"affected"}]}]

https://cert-portal.siemens.com/productcert/html/ssa-032379.html

https://cert-portal.siemens.com/productcert/html/ssa-265688.html

AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H

AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H

OR
          *cpe:2.3:a:openssl:openssl:*:*:*:*:*:*:*:* versions from (including) 3.0.0 up to (excluding) 3.0.20
          *cpe:2.3:a:openssl:openssl:*:*:*:*:*:*:*:* versions from (including) 3.3.0 up to (excluding) 3.3.7
          *cpe:2.3:a:openssl:openssl:*:*:*:*:*:*:*:* versions from (including) 3.4.0 up to (excluding) 3.4.5
          *cpe:2.3:a:openssl:openssl:*:*:*:*:*:*:*:* versions from (including) 3.5.0 up to (excluding) 3.5.6
          *cpe:2.3:a:openssl:openssl:*:*:*:*:*:*:*:* versions from (including) 3.6.0 up to (excluding) 3.6.2
          *cpe:2.3:a:openssl:openssl:*:*:*:*:*:*:*:* versions from (including) 1.1.1 up to (excluding) 1.1.1zg

OpenSSL Software Foundation: https://github.com/openssl/openssl/commit/07e727d304746edb49a98ee8f6ab00256e1f012b Types: Patch

OpenSSL Software Foundation: https://github.com/openssl/openssl/commit/258a8f63b26995ba357f4326da00e19e29c6acbe Types: Patch

OpenSSL Software Foundation: https://github.com/openssl/openssl/commit/444958deaf450aea819171f97ae69eaedede42c3 Types: Patch

OpenSSL Software Foundation: https://github.com/openssl/openssl/commit/7a4e08cee62a728d32e60b0de89e6764339df0a7 Types: Patch

OpenSSL Software Foundation: https://github.com/openssl/openssl/commit/ec03fa050b3346997ed9c5fef3d0e16ad7db8177 Types: Patch

OpenSSL Software Foundation: https://openssl-library.org/news/secadv/20260407.txt Types: Vendor Advisory

Issue summary: An uncommon configuration of clients performing DANE TLSA-based
server authentication, when paired with uncommon server DANE TLSA records, may
result in a use-after-free and/or double-free on the client side.

Impact summary: A use after free can have a range of potential consequences
such as the corruption of valid data, crashes or execution of arbitrary code.

However, the issue only affects clients that make use of TLSA records with both
the PKIX-TA(0/PKIX-EE(1) certificate usages and the DANE-TA(2) certificate
usage.

By far the most common deployment of DANE is in SMTP MTAs for which RFC7672
recommends that clients treat as 'unusable' any TLSA records that have the PKIX
certificate usages.  These SMTP (or other similar) clients are not vulnerable
to this issue.  Conversely, any clients that support only the PKIX usages, and
ignore the DANE-TA(2) usage are also not vulnerable.

The client would also need to be communicating with a server that publishes a
TLSA RRset with both types of TLSA records.

No FIPS modules are affected by this issue, the problem code is outside the
FIPS module boundary.

CWE-416

https://github.com/openssl/openssl/commit/07e727d304746edb49a98ee8f6ab00256e1f012b

https://github.com/openssl/openssl/commit/258a8f63b26995ba357f4326da00e19e29c6acbe

https://github.com/openssl/openssl/commit/444958deaf450aea819171f97ae69eaedede42c3

https://github.com/openssl/openssl/commit/7a4e08cee62a728d32e60b0de89e6764339df0a7

https://github.com/openssl/openssl/commit/ec03fa050b3346997ed9c5fef3d0e16ad7db8177

https://openssl-library.org/news/secadv/20260407.txt