CVE-2021-27292

Ua Parser Js vulnerability

CVSS

7.5

EPSS

3.4%

EPSS pct

87th

Exploited

No known

ua-parser-js >= 0.7.14, fixed in 0.7.24, uses a regular expression which is vulnerable to denial of service. If an attacker sends a malicious User-Agent header, ua-parser-js will get stuck processing it for an extended period of time.

Affected vendor

Ua Parser Js Project

Affected product

Ua Parser Js

CVSS vector

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

Published

2021-03-17

Risk analysis

Based on its CVSS vector, this vulnerability is exploitable over the network, low attack complexity, requiring no privileges, no user interaction. Successful exploitation leads to high impact to availability.

Its EPSS score of 3.4% reflects a lower probability of exploitation activity in the wild over the next 30 days, placing it above 87% of all scored CVEs.

Check your external exposure to CVE-2021-27292

Confirm whether Ua Parser Js Project Ua Parser Js is running on any internet-facing host or subdomain.
Match discovered service fingerprints against the version affected by CVE-2021-27292.
Prioritise remediation if the asset is public, business-critical, or near authentication/payment flows.

How ThreatPort helps with CVE-2021-27292

ThreatPort's external attack surface scanner checks your internet-facing assets — agentlessly, from the outside in — for the exposed services and versions that CVE-2021-27292 affects, then prioritises the finding by real risk using CISA KEV and FIRST.org EPSS.

Run a free external exposure scan

Are you exposed to CVE-2021-27292?

Run an instant, non-intrusive external scan to check your attack surface for CVE-2021-27292.

Start free scan

No credit card. Agentless.

Related vulnerabilities