What is CVE-2019-10744?

CVE-2019-10744 is a critical-severity vulnerability in F5 Big-Ip Access Policy Manager, classified under Improperly Controlled Modification of Object Prototype Attributes (Prototype Pollution). CVSS score: 9.1/10. Published 2019-07-26.

How severe is CVE-2019-10744?

Critical severity. CVSS v3 base score is 9.1 out of 10.

Is CVE-2019-10744 known to be exploited?

46 public proof-of-concept repositories are indexed. Not currently listed in the CISA KEV catalog.

Prototype Pollution in F5 Big-Ip Access Policy Manager

CVE-2019-10744

Versions of lodash lower than 4.17.12 are vulnerable to Prototype Pollution. The function defaultsDeep could be tricked into adding or modifying properties of Object.prototype using a constructor payload.

Vulnerability class: Prototype Pollution

Published 2019-07-26 · last modified 2026-06-17.

CVSS v3 metric

CVSS v3 base score 9.1 (Critical). Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:H.

EPSS exploit prediction

EPSS: 0.050 (92.2th percentile), scored 2026-11-01.

Low probability of exploitation in the next 30 days, but still tracked. 92nd percentile — 92.2% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.

EPSS over last 30 days · oldest: 0.050 · newest: 0.050 · change: 0.000

Affected products

Weakness classification (CWE)

CWE-1321 — Improperly Controlled Modification of Object Prototype Attributes (Prototype Pollution)

Public proof-of-concept exploits

References

access.redhat.com/errata/RHSA-2019:3024 (vendor-advisory, Third Party Advisory)
www.oracle.com/security-alerts/cpuoct2020.html (Patch, Third Party Advisory)
snyk.io/vuln/SNYK-JS-LODASH-450202 (Exploit, Third Party Advisory)
security.netapp.com/advisory/ntap-20191004-0005/ (Third Party Advisory)
support.f5.com/csp/article/K47105354 (Third Party Advisory)
www.oracle.com/security-alerts/cpujan2021.html (Patch, Third Party Advisory)

Frequently asked questions

What is CVE-2019-10744?: CVE-2019-10744 is a critical-severity vulnerability in F5 Big-Ip Access Policy Manager, classified under Improperly Controlled Modification of Object Prototype Attributes (Prototype Pollution). CVSS score: 9.1/10. Published 2019-07-26.
How severe is CVE-2019-10744?: Critical severity. CVSS v3 base score is 9.1 out of 10.
Is CVE-2019-10744 known to be exploited?: 46 public proof-of-concept repositories are indexed. Not currently listed in the CISA KEV catalog.