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CVE-2021-32033: Protectimus SLIM NFC 70 10.01 devices allow a Time Traveler attack in which attackers can predict TOTP passwor

32
Routine
MEDIUM 4.6MITIGATE

CVE-2021-32033 is a medium-severity flaw (CVSS 4.6) affecting slim nfc 70 firmware. Below: why it ranks where it does, which versions are affected, what to do, and the exact commands.

Protectimus SLIM NFC 70 10.01 devices allow a Time Traveler attack in which attackers can predict TOTP passwords in certain situations. The time value used by the device can be set independently from the used seed value for generating time-based one-time passwords, without authentication. Thus, an attacker with short-time physical access to a device can set the internal real-time clock (RTC) to the future, generate one-time passwords, and reset t

Why this priority

  • Public exploit reference

No fix is published yet: follow the downgrade or mitigation steps.

Risk facts

CVSS score4.6 (Medium)
Attack vectorPhysical
Attack complexityLow
Privileges neededNone
User interactionNone
EPSS exploit chance0.5% (top 56%)
CISA exploited listNo
WeaknessCWE-335
Published2021-06-16
Last modified2026-06-17
Publisher (CNA): MITRE · Vendor: protectimus

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

Am I affected?

Timeline

protectimus slim nfc 70 firmware MITIGATE
Affected: 10.01
Fixed in: no fixed release known
Safe to downgrade to: a release before 10.01
Check your OS release
cat /etc/os-release; uname -r
Debian / Ubuntu
sudo apt update && sudo apt full-upgrade
RHEL / Amazon Linux / Fedora
sudo dnf upgrade --refresh
Windows
Install the latest cumulative update from Windows Update
If no patch exists yet
OS downgrades are not safe. Apply the vendor mitigation from the advisory and restrict exposure.
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-2021-32033?

slim nfc 70 firmware: mitigate or apply the listed mitigation. Exact commands for each OS are on this page.

Is CVE-2021-32033 being exploited?

CVE-2021-32033 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-2021-32033 affect?

CVE-2021-32033 affects slim nfc 70 firmware. Severity is medium (CVSS 4.6). Protectimus SLIM NFC 70 10.01 devices allow a Time Traveler attack in which attackers can predict TOTP passwords in certain situations. The time value used by the device can be set independently from the used seed value for generating time-

How urgent is CVE-2021-32033?

Priority 32/100. Public exploit reference

References

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