What is CVE-2021-28684?

CVE-2021-28684 is a medium-severity vulnerability in Powerarchiver, classified under Improper Restriction of XML External Entity Reference (XXE). CVSS score: 4.3/10. Published 2021-06-21.

How severe is CVE-2021-28684?

Medium severity. CVSS v3 base score is 4.3 out of 10.

XXE in Powerarchiver

CVE-2021-28684

The XML parser used in ConeXware PowerArchiver before 20.10.02 allows processing of external entities, which might lead to exfiltration of local files over the network (via an XXE attack).

Vulnerability class: XXE (XML External Entity)

EPSS: 0.009 (56.6th percentile) — read the EPSS interpretation.

CVSS v3 metric

CVSS v3 base score 4.3 (Medium). Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:L/I:N/A:N.

Affected products

Powerarchiver
N/a — versions n/a

Weakness classification (CWE)

CWE-611 — Improper Restriction of XML External Entity Reference (XXE)

References

cve@mitre.org (Product, x_refsource_MISC)
cve@mitre.org (Exploit, Third Party Advisory, x_refsource_MISC)

Frequently asked questions

What is CVE-2021-28684?: CVE-2021-28684 is a medium-severity vulnerability in Powerarchiver, classified under Improper Restriction of XML External Entity Reference (XXE). CVSS score: 4.3/10. Published 2021-06-21.
How severe is CVE-2021-28684?: Medium severity. CVSS v3 base score is 4.3 out of 10.