THREATPORT/VULNERABILITY/CVE-2015-5309
MEDIUM SEVERITY

CVE-2015-5309

Leap vulnerability

CVSS
4.3
EPSS
3.5%
EPSS pct
88th
Exploited
No known
Integer overflow in the terminal emulator in PuTTY before 0.66 allows remote attackers to cause a denial of service (memory corruption) or possibly execute arbitrary code via an ECH (erase characters) escape sequence with a large parameter value, which triggers a buffer underflow.
Affected vendor
Opensuse
Affected product
Leap
CVSS vector
AV:N/AC:M/Au:N/C:N/I:N/A:P
Weakness type (CWE)
Published
2015-12-07

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 availability.

Its EPSS score of 3.5% 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-2015-5309

  • Confirm whether Opensuse Leap is running on any internet-facing host or subdomain.
  • Match discovered service fingerprints against the version affected by CVE-2015-5309.
  • Prioritise remediation if the asset is public, business-critical, or near authentication/payment flows.

How ThreatPort helps with CVE-2015-5309

ThreatPort's external attack surface scanner checks your internet-facing assets — agentlessly, from the outside in — for the exposed services and versions that CVE-2015-5309 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-2015-5309?

Run an instant, non-intrusive external scan to check your attack surface for CVE-2015-5309.

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