VulnerabilityModified
CVE-2019-9897
Multiple denial-of-service attacks that can be triggered by writing to the terminal exist in PuTTY versions before 0.71.
HIGH 7.5EPSS 2.94%
Does this matter?
High impact if exploited, but EPSS currently rates exploitation as unlikely (2.94%). Schedule it in the normal patch cycle and watch for a rise in EPSS or a public exploit.
Description
Multiple denial-of-service attacks that can be triggered by writing to the terminal exist in PuTTY versions before 0.71.
- CVSS 3.0
- 7.5 HIGHCVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
- EPSS
- 2.94% probability · 87th percentile
- Public exploits
- None in Exploit-DB
- CISA KEV
- Not listed
- Affected
- putty/putty · fedoraproject/fedora · debian/debian linux · netapp/oncommand unified manager · opensuse/leap
- Source
- cve@mitre.org
EPSS 2.9% since 26 October 2026; no change recorded yet. Points are recorded when the score first appears and whenever it moves by a percentage point or more.
References
- http://lists.opensuse.org/opensuse-security-announce/2019-04/msg00004.htmlMailing List, Third Party Advisory
- http://lists.opensuse.org/opensuse-security-announce/2019-04/msg00020.htmlMailing List, Third Party Advisory
- https://lists.debian.org/debian-lts-announce/2019/04/msg00023.htmlMailing List, Third Party Advisory
- https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/36LWQ3NPFIV7DC7TC4KFPRYRH2OR7SZ2/
- https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/LDO3F267P347E6U2IILFCYW7JPTLCCES/
- https://seclists.org/bugtraq/2019/Apr/6Mailing List, Third Party Advisory
- https://security.netapp.com/advisory/ntap-20190404-0001/Patch, Third Party Advisory
- https://www.chiark.greenend.org.uk/~sgtatham/putty/changes.htmlThird Party Advisory
- https://www.debian.org/security/2019/dsa-4423Third Party Advisory
- http://lists.opensuse.org/opensuse-security-announce/2019-04/msg00004.htmlMailing List, Third Party Advisory
- http://lists.opensuse.org/opensuse-security-announce/2019-04/msg00020.htmlMailing List, Third Party Advisory
- https://lists.debian.org/debian-lts-announce/2019/04/msg00023.htmlMailing List, Third Party Advisory
- https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/36LWQ3NPFIV7DC7TC4KFPRYRH2OR7SZ2/
- https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/LDO3F267P347E6U2IILFCYW7JPTLCCES/
- https://seclists.org/bugtraq/2019/Apr/6Mailing List, Third Party Advisory
- https://security.netapp.com/advisory/ntap-20190404-0001/Patch, Third Party Advisory
- https://www.chiark.greenend.org.uk/~sgtatham/putty/changes.htmlThird Party Advisory
- https://www.debian.org/security/2019/dsa-4423Third Party Advisory
Source: NVD record, EPSS from FIRST.org, KEV from CISA, exploits from Exploit-DB. Refreshed daily. Download this record as JSON.