How severe is CVE-2001-1491?

CVE-2001-1491 has a CVSS 2.0 base score of 5.0, rated medium severity.

Is CVE-2001-1491 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 7% (93rd percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2001-1491?

CVE-2001-1491 affects Opera Software Opera Web Browser. See the affected-products list for the exact vulnerable versions.

How do I fix CVE-2001-1491?

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

When was CVE-2001-1491 published?

CVE-2001-1491 was published on 2001-12-31 and last updated on 2026-06-16.

CVE-2001-1491

CVE-2001-1491 is a medium-severity vulnerability in Opera Software Opera Web Browser with a CVSS 2.0 base score of 5.0. It is not currently listed as actively exploited by CISA, and its EPSS exploit-prediction score is low.

Key facts

Severity: Medium (CVSS 2.0 base score 5.0)
EPSS exploit prediction: 7% (93rd percentile)
Actively exploited: Not listed in CISA KEV
Affected product: Opera Software Opera Web Browser
Published: 2001-12-31
Last modified: 2026-06-16

Description

Opera 5.11 allows remote attackers to cause a denial of service (CPU consumption and memory leak) via a web page with a large number of images.

Frequently asked questions

What is CVE-2001-1491?: Opera 5.11 allows remote attackers to cause a denial of service (CPU consumption and memory leak) via a web page with a large number of images.
How severe is CVE-2001-1491?: CVE-2001-1491 has a CVSS 2.0 base score of 5.0, rated medium severity.
Is CVE-2001-1491 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 7% (93rd percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2001-1491?: CVE-2001-1491 affects Opera Software Opera Web Browser. See the affected-products list for the exact vulnerable versions.
How do I fix CVE-2001-1491?: Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround.
When was CVE-2001-1491 published?: CVE-2001-1491 was published on 2001-12-31 and last updated on 2026-06-16.

References

Affected products (1)

cpe:2.3:a:opera_software:opera_web_browser:5.1.1:*:win32:*:*:*:*:*

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