No exploitation reportedFix available

CVE-2021-46389

Q: Is CVE-2021-46389 actively exploited?

Active exploitation of CVE-2021-46389 has not been confirmed. Its EPSS score was 1.2% on 2026-10-22, the estimated probability of exploitation in the next 30 days.

Q: What is the CVSS score for CVE-2021-46389?

CVE-2021-46389 has a CVSS v3 base score of 7.5 (HIGH severity), with vector string CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H.

No exploitation reported by the sources we read.

Published2022-02-07
Fixed in2022-01-14
WeaknessCWE-190

Am I affected?

With a domain, we read the version its public headers and pages expose. A distribution build can carry the fix under an older number.

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.

Timeline

dates in UTC

2022-02-0714:15CVE publishedNVD

Observed activity

isMalicious corpus · updated 2026-10-23 18:48 UTC

Indicators tagged with this CVE, per day0 indicators over 7 days

Block these indicators

Firewall list (EDL, text): https://api.ismalicious.com/edl/cve/CVE-2021-46389?format=txt
CSV export: https://api.ismalicious.com/edl/cve/CVE-2021-46389?format=csv
TAXII collection of exploited CVEs
The EDL and CSV take an API key on the Pro plan.

Versions per branch

NVD

High resolution streaming image server project high resolution streaming image server

Branch	Affected	Fixed in	Source
2022.x	< 2022-01-14	2022-01-14	NVD

as publishedRanges as NVD and OSV publish them; a distribution’s build can be fixed under an older number.

Fix

Update High resolution streaming image server project high resolution streaming image server to 2022-01-14

Advisories and patches

github.comPatch
github.comPatch

Detection

Nuclei template: none so far
Exploit-DB: no entry
Proof-of-concept repositories: none listed

Sources

NVDCVSS 3.17.5read 2026-10-23
NVDCVSS 2.05read 2026-10-23
NVDweakness (CWE)CWE-190read 2026-10-23
FIRST EPSSEPSS score1.2 %2026-10-22

Technical details

CVSS v3 Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
Published: 2022-02-07
Last Modified: 2026-06-17
NVD status: Modified

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.

Is CVE-2021-46389 actively exploited?

Active exploitation of CVE-2021-46389 has not been confirmed. Its EPSS score was 1.2% on 2026-10-22, the estimated probability of exploitation in the next 30 days.

What is the CVSS score for CVE-2021-46389?

CVE-2021-46389 has a CVSS v3 base score of 7.5 (HIGH severity), with vector string CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H.

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