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CVE-2013-4852

Published: Aug 19, 2013Updated: Apr 29, 2026 Sources: CVE List NVDCWE-189
NVD MITRE
6.8CVSSMEDIUM
EPSS Score
3.4%
Top 12.5%
CISA KEV
Not in KEV
Exploits
No Known Exploits
Remediation
Patch Available

Description

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.

CVSS Vector Breakdown

AV:NAC:MAu:NC:PI:PA:P
Exploitability
AV:NAccess Vector
Network
AC:MAccess Complexity
Medium
Au:NAuthentication
None
Impact
C:PConfidentiality
Partial
I:PIntegrity
Partial
A:PAvailability
Partial
Open in CVSS calculator →

Weaknesses

CWE-189

Affected Products

n/an/a
winscpwinscp
On-prem
Consumer Software / file-utility
debian linuxdebian
On-premOS
Operating Systems / linux-distro
opensuseopensuse
On-premOS
Operating Systems / linux-distro
puttyputty
Mixed
Consumer Software / file-utility
winscpcommercialConsumer Softwareaka winscp, win scp
debianoss-projectGBOperating Systemsaka debian gnu/linux
opensuseoss-projectDEOperating Systemsaka opensuse
puttyoss-projectConsumer Software
and 1 more affected products View all →

Exploitability

Official Patch Available

References

http://secunia.com/advisories/54533
secunia.com
http://secunia.com/advisories/54517
secunia.com
http://winscp.net/tracker/show_bug.cgi?id=1017
winscp.net
and 8 more references View all →

Timeline

Published
Aug 19, 2013
Last Updated
Apr 29, 2026

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