CVE-2020-35992: Fiserv Prologue through 2020-12-16 does not properly protect the database password

Q: How do I fix CVE-2020-35992?

prologue: upgrade to newer than 2020-12-16. Exact commands for each OS are on this page.

Q: Is CVE-2020-35992 being exploited?

CVE-2020-35992 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-2020-35992 affect?

CVE-2020-35992 affects prologue. Severity is medium (CVSS 6.5). Fiserv Prologue through 2020-12-16 does not properly protect the database password. If an attacker were to gain access to the configuration file (specifically, the LogPassword attribute within appconfig.ini), they would be able to decrypt t

Q: How urgent is CVE-2020-35992?

Priority 36/100. No elevated risk signals yet.

Routine

MEDIUM 6.5UPGRADE

CVE-2020-35992 is a medium-severity flaw (CVSS 6.5) affecting prologue. Below: why it ranks where it does, which versions are affected, what to do, and the exact commands.

Fiserv Prologue through 2020-12-16 does not properly protect the database password. If an attacker were to gain access to the configuration file (specifically, the LogPassword attribute within appconfig.ini), they would be able to decrypt the password stored within the configuration file. This would yield cleartext credentials for the database (to gain access to financial records of customers stored within the database), and in some cases would a

Why this priority

No elevated risk signals yet

A fixed release or distro patch exists.

Risk facts

CVSS score	6.5 (Medium)
Attack vector	Network (remote)
Attack complexity	Low
Privileges needed	Low
User interaction	None
EPSS exploit chance	0.7% (top 46%)
CISA exploited list	No
Weakness	CWE-522
Published	2022-08-23
Last modified	2026-06-17

Publisher (CNA): MITRE · Vendor: fiserv

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

Am I affected?

Timeline

2022-08-23 02:15 UTCPublished CVE record published
2026-06-17 03:14 UTCUpdated Record last modified

fiserv prologue UPGRADE

Affected: <= 2020-12-16

Fixed in: newer than 2020-12-16

Safe to downgrade to: no unaffected older release

1. Check installed version

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

2. UPGRADE to newer than 2020-12-16 (Debian / Ubuntu)

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

2. UPGRADE (RHEL / Amazon Linux / Fedora)

sudo dnf upgrade prologue

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-2020-35992?

prologue: upgrade to newer than 2020-12-16. Exact commands for each OS are on this page.

Is CVE-2020-35992 being exploited?

CVE-2020-35992 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-2020-35992 affect?

CVE-2020-35992 affects prologue. Severity is medium (CVSS 6.5). Fiserv Prologue through 2020-12-16 does not properly protect the database password. If an attacker were to gain access to the configuration file (specifically, the LogPassword attribute within appconfig.ini), they would be able to decrypt t

How urgent is CVE-2020-35992?

Priority 36/100. No elevated risk signals yet.

References

← Back to latest CVEs