CVE-2021-32572: Speco Web Viewer through 2021-05-12 allows Directory Traversal via GET request for a URI with /.

Q: How do I fix CVE-2021-32572?

web viewer: upgrade to newer than 2021-05-12. Exact commands for each OS are on this page.

Q: Is CVE-2021-32572 being exploited?

CVE-2021-32572 is not on the CISA Known Exploited Vulnerabilities list at the time of the last update. Check again, as this can change.

Q: What does CVE-2021-32572 affect?

CVE-2021-32572 affects web viewer. Severity is high (CVSS 7.5). Speco Web Viewer through 2021-05-12 allows Directory Traversal via GET request for a URI with /.. at the beginning, as demonstrated by reading the /etc/passwd file.

Q: How urgent is CVE-2021-32572?

Priority 56/100. High severity; Public exploit reference; Remotely exploitable, no login, no user action

This week

HIGH 7.5REMOTEUPGRADE

CVE-2021-32572 is a high-severity flaw (CVSS 7.5) affecting web viewer. Below: why it ranks where it does, which versions are affected, what to do, and the exact commands.

Speco Web Viewer through 2021-05-12 allows Directory Traversal via GET request for a URI with /.. at the beginning, as demonstrated by reading the /etc/passwd file.

Why this priority

High severity
Public exploit reference
Remotely exploitable, no login, no user action

A fixed release or distro patch exists.

Risk facts

CVSS score	7.5 (High)
Attack vector	Network (remote)
Attack complexity	Low
Privileges needed	None
User interaction	None
EPSS exploit chance	1.7% (top 22%)
CISA exploited list	No
Weakness	CWE-22
Published	2021-05-12
Last modified	2026-06-17

Publisher (CNA): MITRE · Vendor: specotech

Last updated 2026-06-17 · Sources: CVE Program, NVD, CISA KEV, EPSS and vendor advisories · How we score

Am I affected?

Timeline

2021-05-12 16:15 UTCPublished CVE record published
2026-06-17 03:53 UTCUpdated Record last modified

specotech web viewer UPGRADE

Affected: <= 2021-05-12

Fixed in: newer than 2021-05-12

Safe to downgrade to: no unaffected older release

1. Check installed version

apt-cache policy web-viewer || rpm -q web-viewer || web-viewer --version

2. UPGRADE to newer than 2021-05-12 (Debian / Ubuntu)

sudo apt update && sudo apt install --only-upgrade web-viewer

2. UPGRADE (RHEL / Amazon Linux / Fedora)

sudo dnf upgrade web-viewer

Note

Distros often backport fixes without changing the version number. Confirm with the distro advisory or changelog.

Verify at the official source NVD · CVE Program · Report a problem with this page
Scores and fixes here are computed automatically from those and other public sources. Confirm with the vendor advisory before changing production systems.

Quick answers

How do I fix CVE-2021-32572?

web viewer: upgrade to newer than 2021-05-12. Exact commands for each OS are on this page.

Is CVE-2021-32572 being exploited?

CVE-2021-32572 is not on the CISA Known Exploited Vulnerabilities list at the time of the last update. Check again, as this can change.

What does CVE-2021-32572 affect?

CVE-2021-32572 affects web viewer. Severity is high (CVSS 7.5). Speco Web Viewer through 2021-05-12 allows Directory Traversal via GET request for a URI with /.. at the beginning, as demonstrated by reading the /etc/passwd file.

How urgent is CVE-2021-32572?

Priority 56/100. High severity; Public exploit reference; Remotely exploitable, no login, no user action

Related CVEs

CVE-2017-16524 HIGH 8.8 DOWNGRADE Web Viewer 1.0.0.193 on Samsung SRN-1670D devices suffers from an Unrestricted file upload vulnerability: 'net

References

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