CVE-2019-13118

Libxslt vulnerability

CVSS

5.3

EPSS

5.2%

EPSS pct

92th

Exploited

No known

In numbers.c in libxslt 1.1.33, a type holding grouping characters of an xsl:number instruction was too narrow and an invalid character/length combination could be passed to xsltNumberFormatDecimal, leading to a read of uninitialized stack data.

Affected vendor

Xmlsoft

Affected product

Libxslt

CVSS vector

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

Weakness type (CWE)

CWE-843 — Type Confusion

Published

2019-07-01

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 low impact to confidentiality.

Its EPSS score of 5.2% reflects a lower probability of exploitation activity in the wild over the next 30 days, placing it above 92% of all scored CVEs.

Check your external exposure to CVE-2019-13118

Confirm whether Xmlsoft Libxslt is running on any internet-facing host or subdomain.
Match discovered service fingerprints against the version affected by CVE-2019-13118.
Prioritise remediation if the asset is public, business-critical, or near authentication/payment flows.

How ThreatPort helps with CVE-2019-13118

ThreatPort's external attack surface scanner checks your internet-facing assets — agentlessly, from the outside in — for the exposed services and versions that CVE-2019-13118 affects, then prioritises the finding by real risk using CISA KEV and FIRST.org EPSS.

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