CVE-2024-35431: ZKTeco ZKBio CVSecurity 6.1.1 is vulnerable to Directory Traversal via photoBase64

This week

HIGH 7.5REMOTEDOWNGRADE

CVE-2024-35431 is a high-severity flaw (CVSS 7.5) affecting zkbio cvsecurity. Below: why it ranks where it does, which versions are affected, what to do, and the exact commands.

ZKTeco ZKBio CVSecurity 6.1.1 is vulnerable to Directory Traversal via photoBase64. An unauthenticated user can download local files from the server. NOTE: Third parties have indicated other versions are also vulnerable including up to 6.4.1.

Why this priority

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

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

Risk facts

CVSS score	7.5 (High)
Attack vector	Network (remote)
Attack complexity	Low
Privileges needed	None
User interaction	None
EPSS exploit chance	1.0% (top 37%)
CISA exploited list	No
Weakness	CWE-31
Published	2024-05-30
Last modified	2026-06-17

Publisher (CNA): MITRE · Vendor: zkteco

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

Am I affected?

Timeline

2024-05-30 17:15 UTCPublished CVE record published
2026-06-17 07:34 UTCUpdated Record last modified

zkteco zkbio cvsecurity DOWNGRADE

Affected: 6.1.1

Fixed in: no fixed release known

Safe to downgrade to: a release before 6.1.1

1. Check installed version

apt-cache policy zkbio-cvsecurity || rpm -q zkbio-cvsecurity || zkbio-cvsecurity --version

2. No fixed release: DOWNGRADE to a release before 6.1.1 (Debian / Ubuntu)

apt-cache madison zkbio-cvsecurity sudo apt install zkbio-cvsecurity=<VERSION_BEFORE_6.1.1> sudo apt-mark hold zkbio-cvsecurity

2. No fixed release: DOWNGRADE (RHEL / Amazon Linux / Fedora)

dnf --showduplicates list zkbio-cvsecurity sudo dnf downgrade zkbio-cvsecurity-<VERSION_BEFORE_6.1.1> sudo dnf versionlock add zkbio-cvsecurity

Downgrade risk

Downgrading can break dependent software and may reopen older bugs. Read the distro advisory first and test on a non-production host.

After downgrade

Restart the service, and keep the package held until a fixed release ships.

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-2024-35431?

zkbio cvsecurity: downgrade or apply the listed mitigation. Exact commands for each OS are on this page.

Is CVE-2024-35431 being exploited?

CVE-2024-35431 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-2024-35431 affect?

CVE-2024-35431 affects zkbio cvsecurity. Severity is high (CVSS 7.5). ZKTeco ZKBio CVSecurity 6.1.1 is vulnerable to Directory Traversal via photoBase64. An unauthenticated user can download local files from the server. NOTE: Third parties have indicated other versions are also vulnerable including up to 6.4.

How urgent is CVE-2024-35431?

Priority 52/100. High severity; Public exploit reference; Remotely exploitable, no login, no user action

Related CVEs

CVE-2025-45746 MEDIUM 6.5 DOWNGRADE In ZKT ZKBio CVSecurity 6.4.1_R an unauthenticated attacker can craft JWT token using the hardcoded secret to
CVE-2024-36526 CRITICAL 9.8 DOWNGRADE ZKTeco ZKBio CVSecurity v6.1.1 was discovered to contain a hardcoded cryptographic key.
CVE-2024-35433 HIGH 8.1 DOWNGRADE ZKTeco ZKBio CVSecurity 6.1.1 is vulnerable to Incorrect Access Control
CVE-2024-35432 MEDIUM 6.1 DOWNGRADE ZKTeco ZKBio CVSecurity 6.1.1 is vulnerable to Cross Site Scripting (XSS) via an Audio File
CVE-2024-35430 HIGH 8.1 DOWNGRADE In ZKTeco ZKBio CVSecurity v6.1.1_R and earlier (fixed in 6.1.3_R) an authenticated user can bypass password c

References

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