7.5

CVE-2016-7053: openssl NULL Pointer Dereference

CVSS: 7.5v3.0HighModified
AliasesDEBIAN-CVE-2016-7053
Published 04-05-2017Last modified 16-09-2024
Open JSON

Vulnerability summary

CVE-2016-7053 is a high (CVSS 7.5) NULL Pointer Dereference vulnerability in openssl. EPSS estimates a 21.68% chance of exploitation in the next 30 days, higher than 97.6% of scored vulnerabilities.

Overall risk
34/100
0100
Medium · default modelHow is this calculated?
CVSS score
7.5/10
010
High · v3.0 (NVD)
EPSS score
21.68%
0%100%
High · +5.53 pp in 30 days
KEVNot listedIn no KEV catalog
RansomwareNone recordedNo known use recorded
Public exploits0No public exploits recorded

Timeline

  1. 04-05-2017
    PublishedVulnerability first disclosed.
  2. 16-09-2024
    Last modifiedVulnerability information updated.

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 metrics

3 scores · 2 sources · 2 versions

EPSS trend

Probability

21.68%

Chance of exploitation in the next 30 days

Percentile

98%

Versus all other CVEs

30-day change

+5.53 pp

From 16.16% on 21-09-2026

21-09-202621-10-2026
EPSS score
21.68%

Known exploited

Compare KEV catalogs

Not in any of the 3 tracked catalogs.

Public exploits

0 found

No public exploits indexed.

Weaknesses

CWE · root cause

Affected systems

Debian1 product
  • openssl< 1.1.0c-1
Openssl1 product
  • opensslEOLopenssl-1.1.0 | openssl-1.1.0a | openssl-1.1.0b | 1.1.0 | 1.1.0a | 1.1.0b

2 vendors · 2 products

References

5 links