9.8

CVE-2016-1000005: facebook hhvm Type Confusion

CVSS: 9.8v3.1CriticalModified
AliasesUBUNTU-CVE-2016-1000005
Published 19-02-2020Last modified 06-08-2024
Open JSON

Vulnerability summary

CVE-2016-1000005 is a critical (CVSS 9.8) Type Confusion vulnerability in facebook hhvm. EPSS estimates a 1.39% chance of exploitation in the next 30 days, higher than 71.9% of scored vulnerabilities.

Overall risk
70/100
0100
High · default modelHow is this calculated?
CVSS score
9.8/10
010
Critical · v3.1 (NVD)
EPSS score
1.39%
0%100%
Low · 0.00 pp in 30 days
KEVNot listedIn no KEV catalog
RansomwareNone recordedNo known use recorded
Public exploits0No public exploits recorded

Timeline

  1. 19-02-2020
    PublishedVulnerability first disclosed.
  2. 06-08-2024
    Last modifiedVulnerability information updated.

Description

mcrypt_get_block_size did not enforce that the provided "module" parameter was a string, leading to type confusion if other types of data were passed in. This issue affects HHVM versions prior to 3.9.5, all versions between 3.10.0 and 3.12.3 (inclusive), and all versions between 3.13.0 and 3.14.1 (inclusive).

CVSS metrics

3 scores · 2 sources · 2 versions

EPSS trend

Probability

1.39%

Chance of exploitation in the next 30 days

Percentile

72%

Versus all other CVEs

30-day change

0.00 pp

From 1.39% on 20-09-2026

20-09-202620-10-2026
EPSS score
1.39%

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

Facebook1 product
  • hhvm< 3.9.5 | ≥ 3.10.0, ≤ 3.12.3 | ≥ 3.13.0, ≤ 3.14.1
Ubuntu1 product
  • hhvmAll versions (No fix recorded)

2 vendors · 2 products

References

4 links