How severe is CVE-1999-1417?

CVE-1999-1417 has a CVSS 2.0 base score of 7.5, rated high severity.

Is CVE-1999-1417 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 2% (77th percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-1999-1417?

CVE-1999-1417 affects Inso Answerbook2. See the affected-products list for the exact vulnerable versions.

How do I fix CVE-1999-1417?

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-1999-1417 published?

CVE-1999-1417 was published on 1998-08-23 and last updated on 2026-06-16.

CVE-1999-1417

CVE-1999-1417 is a high-severity vulnerability in Inso Answerbook2 with a CVSS 2.0 base score of 7.5. It is not currently listed as actively exploited by CISA, and its EPSS exploit-prediction score is low.

Key facts

Severity: High (CVSS 2.0 base score 7.5)
EPSS exploit prediction: 2% (77th percentile)
Actively exploited: Not listed in CISA KEV
Affected product: Inso Answerbook2
Published: 1998-08-23
Last modified: 2026-06-16

Description

Format string vulnerability in AnswerBook2 (AB2) web server dwhttpd 3.1a4 allows remote attackers to cause a denial of service and possibly execute arbitrary commands via encoded % characters in an HTTP request, which is improperly logged.

Frequently asked questions

What is CVE-1999-1417?: Format string vulnerability in AnswerBook2 (AB2) web server dwhttpd 3.1a4 allows remote attackers to cause a denial of service and possibly execute arbitrary commands via encoded % characters in an HTTP request, which is improperly logged.
How severe is CVE-1999-1417?: CVE-1999-1417 has a CVSS 2.0 base score of 7.5, rated high severity.
Is CVE-1999-1417 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 2% (77th percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-1999-1417?: CVE-1999-1417 affects Inso Answerbook2. See the affected-products list for the exact vulnerable versions.
How do I fix CVE-1999-1417?: 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-1999-1417 published?: CVE-1999-1417 was published on 1998-08-23 and last updated on 2026-06-16.

References

Affected products (1)

cpe:2.3:a:inso:answerbook2:*:*:*:*:*:*:*:*