How severe is CVE-2021-46389?

CVE-2021-46389 has a CVSS 3.x base score of 7.5, rated high severity. It is exploitable over network with low attack complexity, requires no privileges and no user interaction. Impact on confidentiality is none, integrity none, and availability high.

Is CVE-2021-46389 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 1% (64th percentile), an estimate of the probability of exploitation in the next 30 days.

How do I fix CVE-2021-46389?

Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround. Given its high severity, prioritise patching exposed systems.

When was CVE-2021-46389 published?

CVE-2021-46389 was published on 2022-02-07 and last updated on 2026-06-17.

CVE-2021-46389

CVE-2021-46389 is a high-severity vulnerability in High Resolution Streaming Image Server Project High Resolution Streaming Image Server with a CVSS 3.x base score of 7.5. 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-190.

Key facts

Severity: High (CVSS 3.x base score 7.5)
CVSS v2: 5.0
EPSS exploit prediction: 1% (64th percentile)
Actively exploited: Not listed in CISA KEV
Weakness: CWE-190
Affected product: High Resolution Streaming Image Server Project High Resolution Streaming Image Server
Published: 2022-02-07
Last modified: 2026-06-17

Description

IIPImage High Resolution Streaming Image Server prior to commit 882925b295a80ec992063deffc2a3b0d803c3195 is affected by an integer overflow in iipsrv.fcgi through malformed HTTP query parameters.

Frequently asked questions

What is CVE-2021-46389?: IIPImage High Resolution Streaming Image Server prior to commit 882925b295a80ec992063deffc2a3b0d803c3195 is affected by an integer overflow in iipsrv.fcgi through malformed HTTP query parameters.
How severe is CVE-2021-46389?: CVE-2021-46389 has a CVSS 3.x base score of 7.5, rated high severity. It is exploitable over network with low attack complexity, requires no privileges and no user interaction. Impact on confidentiality is none, integrity none, and availability high.
Is CVE-2021-46389 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 1% (64th percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2021-46389?: CVE-2021-46389 affects High Resolution Streaming Image Server Project High Resolution Streaming Image Server. See the affected-products list for the exact vulnerable versions.
How do I fix CVE-2021-46389?: Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround. Given its high severity, prioritise patching exposed systems.
When was CVE-2021-46389 published?: CVE-2021-46389 was published on 2022-02-07 and last updated on 2026-06-17.

References

Affected products (1)

cpe:2.3:a:high_resolution_streaming_image_server_project:high_resolution_streaming_image_server:*:*:*:*:*:*:*:*

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