9.8

CVE-2020-1897: facebook proxygen Use After Free

CVSS: 9.8v3.1CriticalModified
Published 18-05-2020Last modified 04-08-2024
Open JSON

Vulnerability summary

CVE-2020-1897 is a critical (CVSS 9.8) Use After Free vulnerability in facebook proxygen. EPSS estimates a 1.15% chance of exploitation in the next 30 days, higher than 66.3% 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
1.15%
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. 18-05-2020
    PublishedVulnerability first disclosed.
  2. 04-08-2024
    Last modifiedVulnerability information updated.

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.

CVSS metrics

2 scores · 1 source · 2 versions

EPSS trend

Probability

1.15%

Chance of exploitation in the next 30 days

Percentile

66%

Versus all other CVEs

30-day change

0.00 pp

From 1.15% on 20-09-2026

20-09-202620-10-2026
EPSS score
1.15%

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
  • proxygen≥ unspecified, < v2020.05.18.00 | < 2020.05.18.00

1 vendor · 1 product

References

1 links