The seafile-client client 7.0.8 for Seafile is vulnerable to DLL hijacking because it loads exchndl.dll from the current working directory.

published 2020-07-29 6 y ago modified 2026-06-17 4 mo ago also EUVD-2020-8109

cvss: 7.8; version 3.1, NVD
cisa kev: Not listed; not in CISA's catalog
epss: 0.4%; EPSS 0.4% chance of exploitation in 30 days, percentile 38%
public exploits: 0; none known

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-2020-16143 updated 2025-11-21 cvss 3.8

seafile-client: DLL hijacking by loading exchndl.dll from the CWD

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

0.44% chance of exploitation in the next 30 days, higher than 38% of all scored CVEs (FIRST EPSS, 2026-11-08).

Exploits and checks

github.com https://github.com/haiwen/seafile-client/issues/1309 referenced PoC, tagged "exploit" by a source, unverified

CVSS scores

assigned by	version	score	vector
NVD	3.1	7.8	CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H
NVD	2.0	4.4	AV:L/AC:M/Au:N/C:P/I:P/A:P

Classification

Weakness

CWE-427 Uncontrolled Search Path Element

References

github.com /haiwen/seafile-client/issues/1309
exploit, issue-tracking, third-party-advisory

Sources

CVE List CVE-2020-16143
NVD CVE-2020-16143

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.

Summary