How severe is CVE-2001-0557?

CVE-2001-0557 has a CVSS 2.0 base score of 5.0, rated medium severity.

Is CVE-2001-0557 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 11% (95th percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2001-0557?

CVE-2001-0557 primarily affects T. Hauck Jana Web Server. In total, 4 product configurations (CPEs) are listed as vulnerable; see the affected-products list for the exact versions.

How do I fix CVE-2001-0557?

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

When was CVE-2001-0557 published?

CVE-2001-0557 was published on 2001-08-14 and last updated on 2026-06-16.

CVE-2001-0557

CVE-2001-0557 is a medium-severity vulnerability in T. Hauck Jana Web Server with a CVSS 2.0 base score of 5.0. Its EPSS exploit-prediction score of 11% places it in the 95th percentile, indicating an elevated likelihood of exploitation.

Key facts

Severity: Medium (CVSS 2.0 base score 5.0)
EPSS exploit prediction: 11% (95th percentile)
Actively exploited: Not listed in CISA KEV
Affected product: T. Hauck Jana Web Server
Published: 2001-08-14
Last modified: 2026-06-16

Description

T. Hauck Jana Webserver 1.46 and earlier allows a remote attacker to view arbitrary files via a '..' (dot dot) attack which is URL encoded (%2e%2e).

Frequently asked questions

What is CVE-2001-0557?: T. Hauck Jana Webserver 1.46 and earlier allows a remote attacker to view arbitrary files via a '..' (dot dot) attack which is URL encoded (%2e%2e).
How severe is CVE-2001-0557?: CVE-2001-0557 has a CVSS 2.0 base score of 5.0, rated medium severity.
Is CVE-2001-0557 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 11% (95th percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2001-0557?: CVE-2001-0557 primarily affects T. Hauck Jana Web Server. In total, 4 product configurations (CPEs) are listed as vulnerable; see the affected-products list for the exact versions.
How do I fix CVE-2001-0557?: Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround.
When was CVE-2001-0557 published?: CVE-2001-0557 was published on 2001-08-14 and last updated on 2026-06-16.

References

Affected products (4)

cpe:2.3:a:t._hauck:jana_web_server:*:*:*:*:*:*:*:*
cpe:2.3:a:t._hauck:jana_web_server:1.0j:*:*:*:*:*:*:*
cpe:2.3:a:t._hauck:jana_web_server:1.45:*:*:*:*:*:*:*
cpe:2.3:a:t._hauck:jana_web_server:2.0_beta_1:*:*:*:*:*:*:*

More vulnerabilities in T. Hauck Jana Web Server

CVE-2002-1062 — High (CVSS 7.5): Signedness error in Thomas Hauck Jana Server 2.x through 2.2.1, and 1.4.6 and earlier, allows remote attackers to…
CVE-2002-1061 — High (CVSS 7.5): Multiple buffer overflows in Thomas Hauck Jana Server 2.x through 2.2.1, and 1.4.6 and earlier, allow remote attackers…
CVE-2002-1066 — High (CVSS 7.5): Thomas Hauck Jana Server 1.4.6 and earlier allows remote attackers to cause a denial of service and possibly execute…
CVE-2002-1065 — High (CVSS 7.5): Thomas Hauck Jana Server 2.x through 2.2.1, and 1.4.6 and earlier, does not restrict the number of unsuccessful login…
CVE-2002-1064 — Medium (CVSS 5.0): Thomas Hauck Jana Server 2.x through 2.2.1, and 1.4.6 and earlier, generates different responses for valid and invalid…
CVE-2002-1063 — Medium (CVSS 5.0): Thomas Hauck Jana Server 2.x through 2.2.1, and 1.4.6 and earlier, allows remote attackers to cause a denial of service…

All CVEs affecting T. Hauck Jana Web Server →