CVE-2016-7053
In OpenSSL 1.1.0 before 1.1.0c, applications parsing invalid CMS structures can crash with a NULL pointer dereference.
Does this matter?
EPSS puts the probability of exploitation in the next 30 days at 21.7%, higher than 98% of all known CVEs. Patch or mitigate before the next change window.
Description
In OpenSSL 1.1.0 before 1.1.0c, applications parsing invalid CMS structures can crash with a NULL pointer dereference. This is caused by a bug in the handling of the ASN.1 CHOICE type in OpenSSL 1.1.0 which can result in a NULL value being passed to the structure callback if an attempt is made to free certain invalid encodings. Only CHOICE structures using a callback which do not handle NULL value are affected.
- CVSS 3.0
- 7.5 HIGHCVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
- EPSS
- 21.68% probability · 98th percentile
- Public exploits
- None in Exploit-DB
- CISA KEV
- Not listed
- Weakness
- CWE-476
- Affected
- openssl/openssl
- Source
- openssl-security@openssl.org
EPSS moved from 16.2% on 21 September 2026 to 21.7% on 27 October 2026. The dashed line is the ten per cent mark our analysts treat as “patch before the next change window”.
References
- http://www.securityfocus.com/bid/94244Third Party Advisory, VDB Entry
- http://www.securitytracker.com/id/1037261
- https://h20566.www2.hpe.com/hpsc/doc/public/display?docLocale=en_US&docId=emr_na-hpesbhf03744en_us
- https://www.openssl.org/news/secadv/20161110.txtVendor Advisory
- http://www.securityfocus.com/bid/94244Third Party Advisory, VDB Entry
- http://www.securitytracker.com/id/1037261
- https://h20566.www2.hpe.com/hpsc/doc/public/display?docLocale=en_US&docId=emr_na-hpesbhf03744en_us
- https://www.openssl.org/news/secadv/20161110.txtVendor Advisory
Source: NVD record, EPSS from FIRST.org, KEV from CISA, exploits from Exploit-DB. Refreshed daily. Download this record as JSON.