CVE-2026-28387

CVE-2026-28387

Name

CVE-2026-28387

Description

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.

NVD Severity

unknown

Other trackers

CVE, NVD, CERT, CVE Details, CIRCL, Arch Linux, Debian, Red Hat, Ubuntu, Gentoo, SUSE (Bugzilla), SUSE (CVE), Mageia

Mailing lists

oss-security, full-disclosure, bugtraq

Exploits

Exploit DB, Metasploit

Forges

GitHub (code, issues), Aports (code, issues)

Type	URI
openssl-security@openssl.org	https://github.com/openssl/openssl/commit/07e727d304746edb49a98ee8f6ab00256e1f012b
openssl-security@openssl.org	https://github.com/openssl/openssl/commit/258a8f63b26995ba357f4326da00e19e29c6acbe
openssl-security@openssl.org	https://github.com/openssl/openssl/commit/444958deaf450aea819171f97ae69eaedede42c3
openssl-security@openssl.org	https://github.com/openssl/openssl/commit/7a4e08cee62a728d32e60b0de89e6764339df0a7
openssl-security@openssl.org	https://github.com/openssl/openssl/commit/ec03fa050b3346997ed9c5fef3d0e16ad7db8177
openssl-security@openssl.org	https://openssl-library.org/news/secadv/20260407.txt
0b142b55-0307-4c5a-b3c9-f314f3fb7c5e	https://cert-portal.siemens.com/productcert/html/ssa-032379.html
0b142b55-0307-4c5a-b3c9-f314f3fb7c5e	https://cert-portal.siemens.com/productcert/html/ssa-265688.html

Type

URI

openssl-security@openssl.org

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

openssl-security@openssl.org

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

openssl-security@openssl.org

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

openssl-security@openssl.org

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

openssl-security@openssl.org

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

openssl-security@openssl.org

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

0b142b55-0307-4c5a-b3c9-f314f3fb7c5e

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

0b142b55-0307-4c5a-b3c9-f314f3fb7c5e

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

Match rules

CPE URI	Source package	Min version	Max version
`cpe:2.3:a:openssl:openssl::::::::`	openssl	>= 1.1.1	< 1.1.1zg
`cpe:2.3:a:openssl:openssl::::::::`	openssl	>= 3.0.0	< 3.0.20
`cpe:2.3:a:openssl:openssl::::::::`	openssl	>= 3.3.0	< 3.3.7
`cpe:2.3:a:openssl:openssl::::::::`	openssl	>= 3.4.0	< 3.4.5
`cpe:2.3:a:openssl:openssl::::::::`	openssl	>= 3.5.0	< 3.5.6
`cpe:2.3:a:openssl:openssl::::::::`	openssl	>= 3.6.0	< 3.6.2

CPE URI

Source package

Min version

Max version