THREATPORT/VULNERABILITY/CVE-2013-4852
MEDIUM SEVERITY

CVE-2013-4852

Winscp vulnerability

CVSS
6.8
EPSS
3.4%
EPSS pct
88th
Exploited
No known
Integer overflow in PuTTY 0.62 and earlier, WinSCP before 5.1.6, and other products that use PuTTY allows remote SSH servers to cause a denial of service (crash) and possibly execute arbitrary code in certain applications that use PuTTY via a negative size value in an RSA key signature during the SSH handshake, which triggers a heap-based buffer overflow.
Affected vendor
Winscp
Affected product
Winscp
CVSS vector
AV:N/AC:M/Au:N/C:P/I:P/A:P
Weakness type (CWE)
Published
2013-08-19

Risk analysis

Based on its CVSS vector, this vulnerability is exploitable over the network, medium attack complexity, requiring no authentication. Successful exploitation leads to partial impact to confidentiality, partial impact to integrity, partial 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 88% of all scored CVEs.

Check your external exposure to CVE-2013-4852

  • Confirm whether Winscp Winscp is running on any internet-facing host or subdomain.
  • Match discovered service fingerprints against the version affected by CVE-2013-4852.
  • Prioritise remediation if the asset is public, business-critical, or near authentication/payment flows.

How ThreatPort helps with CVE-2013-4852

ThreatPort's external attack surface scanner checks your internet-facing assets — agentlessly, from the outside in — for the exposed services and versions that CVE-2013-4852 affects, then prioritises the finding by real risk using CISA KEV and FIRST.org EPSS.

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