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Fencer Vulns
high 7.5

CVE-2017-6800 json

An issue was discovered in ytnef before 1.9.2.

published 2017-03-10 9 y ago modified 2026-06-17 4 mo ago also EUVD-2017-15854

cvss
7.5
version 3.0, NVD
cisa kev
Not listed
not in CISA's catalog
epss
1.7%
EPSS 1.7% chance of exploitation in 30 days, percentile 77%
public exploits
0
none known

Summary

An issue was discovered in ytnef before 1.9.2. An invalid memory access (heap-based buffer over-read) can occur during handling of LONG data types, related to MAPIPrint() in libytnef.

Patch / fix

  • libytnef Debian 14, Debian 13, Debian 12 1.9.2-1

debian advisories DEBIAN-CVE-2017-6800

  • libytnef Ubuntu 14.04 LTS 1.5-6ubuntu0.1
  • libytnef Ubuntu 16.04 LTS 1.5-9ubuntu0.1

ubuntu advisories UBUNTU-CVE-2017-6800

Ubuntu security data © Canonical Ltd., from https://github.com/canonical/ubuntu-security-notices via OSV; changed: normalised to fixed package versions per release. CC BY-SA 4.0

Vendor advisories

What the vendors themselves say about their products: affected, fixed or not affected, and what to do.

red hat product security vex CVE-2017-6800 updated

ytnef: Multiple vulnerabilities fixed in 1.9.2 version

  • Red Hat All currently supported Red Hat products
    not affected: vulnerable code not present

Red Hat CSAF VEX © Red Hat, Inc., from https://security.access.redhat.com/data/csaf/v2/vex/; changed: reduced to product statuses and remediations. CC BY 4.0 · csaf

Exploit prediction

1.72% chance of exploitation in the next 30 days, higher than 77% of all scored CVEs (FIRST EPSS, 2026-11-08).

Exploits and checks

  • github.com https://github.com/Yeraze/ytnef/issues/28 referenced PoC, tagged "exploit" by a source, unverified

CVSS scores

assigned by version score vector
NVD 3.0 7.5 CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
NVD 2.0 5.0 AV:N/AC:L/Au:N/C:N/I:N/A:P

Classification

Weakness

References

Sources

Fencer Vulns keeps one entry per vulnerability: the CVE id wins, then GHSA, and records that alias each other are merged, except that two CVEs always keep separate entries. The same data is available as JSON.