CVE-2009-4495

Yaws vulnerability

CVSS

5.0

EPSS

9.0%

EPSS pct

95th

Exploited

No known

Yaws 1.85 writes data to a log file without sanitizing non-printable characters, which might allow remote attackers to modify a window's title, or possibly execute arbitrary commands or overwrite files, via an HTTP request containing an escape sequence for a terminal emulator.

Affected vendor

Yaws

Affected product

Yaws

CVSS vector

AV:N/AC:L/Au:N/C:P/I:N/A:N

Weakness type (CWE)

CWE-20 — Improper Input Validation

Published

2010-01-13

Risk analysis

Based on its CVSS vector, this vulnerability is exploitable over the network, low attack complexity, requiring no authentication. Successful exploitation leads to partial impact to confidentiality.

Its EPSS score of 9.0% reflects a lower probability of exploitation activity in the wild over the next 30 days, placing it above 95% of all scored CVEs.

Check your external exposure to CVE-2009-4495

Confirm whether Yaws Yaws is running on any internet-facing host or subdomain.
Match discovered service fingerprints against the version affected by CVE-2009-4495.
Prioritise remediation if the asset is public, business-critical, or near authentication/payment flows.

How ThreatPort helps with CVE-2009-4495

ThreatPort's external attack surface scanner checks your internet-facing assets — agentlessly, from the outside in — for the exposed services and versions that CVE-2009-4495 affects, then prioritises the finding by real risk using CISA KEV and FIRST.org EPSS.

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