CVE-2019-15525: There is Missing SSL Certificate Validation in the pw3270 terminal emulator before version 5.1.

Q: How do I fix CVE-2019-15525?

pw3270: upgrade to 5.1. Exact commands for each OS are on this page.

Q: Is CVE-2019-15525 being exploited?

CVE-2019-15525 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-2019-15525 affect?

CVE-2019-15525 affects pw3270. Severity is high (CVSS 8.1). There is Missing SSL Certificate Validation in the pw3270 terminal emulator before version 5.1.

Q: How urgent is CVE-2019-15525?

Priority 48/100. High severity; Remotely exploitable, no login, no user action

This month

HIGH 8.1REMOTEUPGRADE

CVE-2019-15525 is a high-severity flaw (CVSS 8.1) affecting pw3270. Below: why it ranks where it does, which versions are affected, what to do, and the exact commands.

There is Missing SSL Certificate Validation in the pw3270 terminal emulator before version 5.1.

Why this priority

High severity
Remotely exploitable, no login, no user action

A fixed release or distro patch exists.

Risk facts

CVSS score	8.1 (High)
Attack vector	Network (remote)
Attack complexity	High
Privileges needed	None
User interaction	None
EPSS exploit chance	0.8% (top 43%)
CISA exploited list	No
Weakness	CWE-295
Published	2019-08-23
Last modified	2026-06-17

Publisher (CNA): MITRE · Vendor: pw3270 project

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

Am I affected?

Timeline

2019-08-23 16:15 UTCPublished CVE record published
2026-06-17 02:20 UTCUpdated Record last modified

pw3270 project pw3270 UPGRADE

Affected: < 5.1

Fixed in: 5.1

Safe to downgrade to: no unaffected older release

1. Check installed version

apt-cache policy pw3270 || rpm -q pw3270 || pw3270 --version

2. UPGRADE to 5.1 (Debian / Ubuntu)

sudo apt update && sudo apt install --only-upgrade pw3270

2. UPGRADE (RHEL / Amazon Linux / Fedora)

sudo dnf upgrade pw3270

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-2019-15525?

pw3270: upgrade to 5.1. Exact commands for each OS are on this page.

Is CVE-2019-15525 being exploited?

CVE-2019-15525 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-2019-15525 affect?

CVE-2019-15525 affects pw3270. Severity is high (CVSS 8.1). There is Missing SSL Certificate Validation in the pw3270 terminal emulator before version 5.1.

How urgent is CVE-2019-15525?

Priority 48/100. High severity; Remotely exploitable, no login, no user action

References

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