How severe is CVE-2021-33209?

CVE-2021-33209 has a CVSS 3.x base score of 5.3, rated medium severity. It is exploitable over network with low attack complexity, requires no privileges and no user interaction. Impact on confidentiality is low, integrity none, and availability none.

Is CVE-2021-33209 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 1% (50th percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2021-33209?

CVE-2021-33209 affects Fimer Aurora Vision. See the affected-products list for the exact vulnerable versions.

How do I fix CVE-2021-33209?

Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround.

When was CVE-2021-33209 published?

CVE-2021-33209 was published on 2021-11-03 and last updated on 2026-06-17.

CVE-2021-33209

CVE-2021-33209 is a medium-severity vulnerability in Fimer Aurora Vision with a CVSS 3.x base score of 5.3. It is not currently listed as actively exploited by CISA, and its EPSS exploit-prediction score is low. The underlying weakness is classified as CWE-307.

Key facts

Severity: Medium (CVSS 3.x base score 5.3)
CVSS v2: 5.0
EPSS exploit prediction: 1% (50th percentile)
Actively exploited: Not listed in CISA KEV
Weakness: CWE-307
Affected product: Fimer Aurora Vision
Published: 2021-11-03
Last modified: 2026-06-17

Description

An issue was discovered in Fimer Aurora Vision before 2.97.10. The response to a failed login attempt discloses whether the username or password is wrong, helping an attacker to enumerate usernames. This can make a brute-force attack easier.

Frequently asked questions

What is CVE-2021-33209?: An issue was discovered in Fimer Aurora Vision before 2.97.10. The response to a failed login attempt discloses whether the username or password is wrong, helping an attacker to enumerate usernames. This can make a brute-force attack easier.
How severe is CVE-2021-33209?: CVE-2021-33209 has a CVSS 3.x base score of 5.3, rated medium severity. It is exploitable over network with low attack complexity, requires no privileges and no user interaction. Impact on confidentiality is low, integrity none, and availability none.
Is CVE-2021-33209 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 1% (50th percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2021-33209?: CVE-2021-33209 affects Fimer Aurora Vision. See the affected-products list for the exact vulnerable versions.
How do I fix CVE-2021-33209?: Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround.
When was CVE-2021-33209 published?: CVE-2021-33209 was published on 2021-11-03 and last updated on 2026-06-17.

References

Affected products (1)

cpe:2.3:a:fimer:aurora_vision:*:*:*:*:*:*:*:*

More vulnerabilities in Fimer Aurora Vision

CVE-2021-33210 — Medium (CVSS 4.3): An issue was discovered in Fimer Aurora Vision before 2.97.10. An attacker can (in the WebUI) obtain plant information…

All CVEs affecting Fimer Aurora Vision →

Other CWE-307 (Improper Restriction of Excessive Authentication Attempts) vulnerabilities

CVE-2026-6853 — Critical (CVSS 9.8): Improper restriction of excessive authentication attempts vulnerability in Başbelen Group Food Cafe Businesses…
CVE-2026-8760 — Critical (CVSS 9.8): The Login with OTP plugin for WordPress is vulnerable to authentication bypass in all versions up to, and including,…
CVE-2020-37228 — Critical (CVSS 9.8): iDS6 DSSPro Digital Signage System 6.2 contains a CAPTCHA security bypass vulnerability that allows attackers to bypass…
CVE-2026-33879 — Critical (CVSS 9.8): Federated Learning and Interoperability Platform (FLIP) is an open-source platform for federated training and…
CVE-2026-33640 — Critical (CVSS 9.8): Outline is a service that allows for collaborative documentation. Outline implements an Email OTP login flow for users…
CVE-2026-31851 — Critical (CVSS 9.8): Nexxt Solutions Nebula 300+ firmware through version 12.01.01.37 does not implement rate limiting or account lockout…

Browse all CWE-307 (Improper Restriction of Excessive Authentication Attempts) vulnerabilities →