CVE-2020-1897

Name: CVE-2020-1897
Creator: NVD / NIST
Published: 2020-05-18T22:15:13+00:00
License: https://creativecommons.org/publicdomain/zero/1.0/

CRITICALCVSS 9.8/10EPSS 1.15%

Last modified Jun 17, 2026

CVE-2020-1897 is a critical-severity vulnerability rated 9.8/10 on the CVSS scale. A use-after-free is possible due to an error in lifetime management in the request adaptor when a malicious client invokes request error handling in a specific sequence. This issue affects versions of proxygen prior to v2020.05.18.00.. EPSS estimates a 1.15% chance of exploitation in the next 30 days.

Description

A use-after-free is possible due to an error in lifetime management in the request adaptor when a malicious client invokes request error handling in a specific sequence. This issue affects versions of proxygen prior to v2020.05.18.00.

Metrics

CVSS 3.1

9.8/10

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

EPSS Probability

1.15%

62.8th percentile

Probability of exploitation in the next 30 days. Learn more

Weakness Enumeration

CWE-416

Affected Software

Vendor	Product	Versions
Facebook	Proxygen	< 2020.05.18.00

References

https://www.facebook.com/security/advisories/cve-2020-1897Vendor Advisory
https://www.facebook.com/security/advisories/cve-2020-1897Vendor Advisory

Timeline

Published: May 18, 2020
Last Modified: Jun 17, 2026
Status: Modified

Frequently Asked Questions

What is CVE-2020-1897?

How severe is CVE-2020-1897?

CVE-2020-1897 has a CVSS score of 9.8/10 (CRITICAL severity). The EPSS model estimates a 1.15% probability of exploitation in the next 30 days.

How do I fix CVE-2020-1897?

Check the vendor references and advisories linked above for patched versions and mitigation guidance. You can also run a Strix scan to test if your systems are affected.

Are you affected by CVE-2020-1897?

Run a free Strix scan to check your systems for this vulnerability.

Scan your code now

Source: NVD / NIST