CVE-2021-35060: /way4acs/enroll in OpenWay WAY4 ACS before 1.2.278-2693 allows unauthenticated attackers to leverage response

Q: How do I fix CVE-2021-35060?

way4: upgrade to 1.2.278-2693. Exact commands for each OS are on this page.

Q: Is CVE-2021-35060 being exploited?

CVE-2021-35060 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-2021-35060 affect?

CVE-2021-35060 affects way4. Severity is medium (CVSS 5.3). /way4acs/enroll in OpenWay WAY4 ACS before 1.2.278-2693 allows unauthenticated attackers to leverage response differences to discover whether a specific payment card number is stored in the system.

Q: How urgent is CVE-2021-35060?

Priority 38/100. Remotely exploitable, no login, no user action

Routine

MEDIUM 5.3REMOTEUPGRADE

CVE-2021-35060 is a medium-severity flaw (CVSS 5.3) affecting way4. Below: why it ranks where it does, which versions are affected, what to do, and the exact commands.

/way4acs/enroll in OpenWay WAY4 ACS before 1.2.278-2693 allows unauthenticated attackers to leverage response differences to discover whether a specific payment card number is stored in the system.

Why this priority

Remotely exploitable, no login, no user action

A fixed release or distro patch exists.

Risk facts

CVSS score	5.3 (Medium)
Attack vector	Network (remote)
Attack complexity	Low
Privileges needed	None
User interaction	None
EPSS exploit chance	0.8% (top 42%)
CISA exploited list	No
Weakness	CWE-209
Published	2021-10-11
Last modified	2026-06-17

Publisher (CNA): MITRE · Vendor: openwaygroup

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

Am I affected?

Timeline

2021-10-11 09:15 UTCPublished CVE record published
2026-06-17 03:57 UTCUpdated Record last modified

openwaygroup way4 UPGRADE

Affected: < 1.2.278-2693

Fixed in: 1.2.278-2693

Safe to downgrade to: no unaffected older release

1. Check installed version

apt-cache policy way4 || rpm -q way4 || way4 --version

2. UPGRADE to 1.2.278-2693 (Debian / Ubuntu)

sudo apt update && sudo apt install --only-upgrade way4

2. UPGRADE (RHEL / Amazon Linux / Fedora)

sudo dnf upgrade way4

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-2021-35060?

way4: upgrade to 1.2.278-2693. Exact commands for each OS are on this page.

Is CVE-2021-35060 being exploited?

CVE-2021-35060 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-2021-35060 affect?

CVE-2021-35060 affects way4. Severity is medium (CVSS 5.3). /way4acs/enroll in OpenWay WAY4 ACS before 1.2.278-2693 allows unauthenticated attackers to leverage response differences to discover whether a specific payment card number is stored in the system.

How urgent is CVE-2021-35060?

Priority 38/100. Remotely exploitable, no login, no user action

Related CVEs

CVE-2021-35059 MEDIUM 6.1 UPGRADE OpenWay WAY4 ACS before 1.2.278-2693 allows XSS via the /way4acs/enroll action parameter.

References

← Back to latest CVEs