Advantech WebAccess 8.3.4 does not properly restrict an RPC call that allows unauthenticated, remote users to read files.

published 2020-04-01 6y ago modified 2026-06-17 4mo ago also EUVD-2019-13549

cvss: 7.5; version 3.1, NVD
cisa kev: Not listed; not in CISA's catalog
epss: 1.4%; EPSS 1.4% chance of exploitation in 30 days, percentile 72%
public exploits: 0; none known

Advantech WebAccess 8.3.4 does not properly restrict an RPC call that allows unauthenticated, remote users to read files. An attacker can use this vulnerability to recover the administrator password.

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Exploit prediction

1.40% chance of exploitation in the next 30 days, higher than 72% of all scored CVEs (FIRST EPSS, 2026-11-09).

CVSS scores

assigned by	version	score	vector
NVD	3.1	7.5	CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N
NVD	2.0	5.0	AV:N/AC:L/Au:N/C:P/I:N/A:N

Affected products

n/a Advantech WebAccess

Classification

Weakness

CWE-284 Improper Access Control
CWE-522 Insufficiently Protected Credentials

References

tenable.com /security/research/tra-2019-15
third-party-advisory

Sources

CVE List CVE-2019-3942
NVD CVE-2019-3942

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