CVE-2017-17439

Exploitation

Not assessed. CISA has not published an exploitation assessment for this record, and it is not in the KEV catalog. That is an absence of assessment, not a finding of no risk.

SSVC decision

Not assessed by CISA

EPSS probability

3.42% probability of exploitation activity in the next 30 days.

EPSS percentile

Equal to or higher than the score of 88.3% of scored records. A rank, not a probability.

NVD base score

7.5 (CVSS v3.x), scored by the NVD independently of the CNA.

NVD CVSS vector

CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H

NVD analysis status

Modified. NVD last modified this record on 2026-06-17.

Red Hat severity

No Red Hat rating. Red Hat rates the CVEs that affect its products.

Exploit-prediction scores from FIRST. Independent scoring and analysis status from the NVD. Vendor severity from Red Hat. Exploitation assessment and catalog membership from CISA.

Published

2017-12-06 15:00Z8 YR AGO

Last updated

2024-08-05 20:51Z2 YR AGO

Reserved

2017-12-06

Assigning CNA

mitre

Record state

PUBLISHED

Severity

Not rated by the issuing CNA

CNA CVSS vector

Not published by the issuing CNA

Weaknesses

• CWE-476NULL Pointer DereferenceBase

Data version

5.1

Document digest

eba3b6b48393ef966281d0b0df75f81fda48312c94c2a84c92d15261e41eb9b8

• bugs.debian.orghttps://bugs.debian.org/cgi-bin/bugreport.cgi?bug=878144x_refsource_CONFIRM
• github.comhttps://github.com/heimdal/heimdal/commit/1a6a6e462dc2ac6111f9e02c6852ddec4849b887x_refsource_CONFIRM
• www.h5l.orghttp://www.h5l.org/pipermail/heimdal-announce/2017-December/000008.htmlx_refsource_CONFIRM
• www.h5l.orghttp://www.h5l.org/pipermail/heimdal-discuss/2017-August/000259.htmlx_refsource_MISC
• github.comhttps://github.com/heimdal/heimdal/issues/353x_refsource_CONFIRM
• h5l.orghttp://h5l.org/advisories.html?show=2017-12-08x_refsource_CONFIRM
• www.debian.orgDSA-4055https://www.debian.org/security/2017/dsa-4055vendor-advisoryx_refsource_DEBIAN