How severe is CVE-1999-0685?

CVE-1999-0685 has a CVSS 2.0 base score of 5.1, rated medium severity.

Is CVE-1999-0685 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 2% (73rd percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-1999-0685?

CVE-1999-0685 primarily affects Netscape Communicator. In total, 5 product configurations (CPEs) are listed as vulnerable; see the affected-products list for the exact versions.

How do I fix CVE-1999-0685?

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

When was CVE-1999-0685 published?

CVE-1999-0685 was published on 1999-09-02 and last updated on 2026-06-16.

CVE-1999-0685

CVE-1999-0685 is a medium-severity vulnerability in Netscape Communicator with a CVSS 2.0 base score of 5.1. 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 5.1)
EPSS exploit prediction: 2% (73rd percentile)
Actively exploited: Not listed in CISA KEV
Affected product: Netscape Communicator
Published: 1999-09-02
Last modified: 2026-06-16

Description

Buffer overflow in Netscape Communicator via EMBED tags in the pluginspage option.

Frequently asked questions

What is CVE-1999-0685?: Buffer overflow in Netscape Communicator via EMBED tags in the pluginspage option.
How severe is CVE-1999-0685?: CVE-1999-0685 has a CVSS 2.0 base score of 5.1, rated medium severity.
Is CVE-1999-0685 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 2% (73rd percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-1999-0685?: CVE-1999-0685 primarily affects Netscape Communicator. In total, 5 product configurations (CPEs) are listed as vulnerable; see the affected-products list for the exact versions.
How do I fix CVE-1999-0685?: Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround.
When was CVE-1999-0685 published?: CVE-1999-0685 was published on 1999-09-02 and last updated on 2026-06-16.

References

http://www.securityfocus.com/bid/618

Affected products (5)

cpe:2.3:a:netscape:communicator:4.5:*:*:*:*:*:*:*
cpe:2.3:a:netscape:communicator:4.06:*:*:*:*:*:*:*
cpe:2.3:a:netscape:communicator:4.6:*:*:*:*:*:*:*
cpe:2.3:a:netscape:communicator:4.51:*:*:*:*:*:*:*
cpe:2.3:a:netscape:communicator:4.61:*:*:*:*:*:*:*

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