CVE-2002-2102

CVE-2002-2102 is a medium-severity vulnerability in Jcraft Jzlib 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

Description

InfBlocks.java in JCraft JZlib before 0.0.7 allow remote attackers to cause a denial of service (NullPointerException) via an invalid block of deflated data.

Frequently asked questions

What is CVE-2002-2102?
InfBlocks.java in JCraft JZlib before 0.0.7 allow remote attackers to cause a denial of service (NullPointerException) via an invalid block of deflated data.
How severe is CVE-2002-2102?
CVE-2002-2102 has a CVSS 2.0 base score of 5.0, rated medium severity.
Is CVE-2002-2102 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-2002-2102?
CVE-2002-2102 primarily affects Jcraft Jzlib. In total, 6 product configurations (CPEs) are listed as vulnerable; see the affected-products list for the exact versions.
How do I fix CVE-2002-2102?
Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround.
When was CVE-2002-2102 published?
CVE-2002-2102 was published on 2002-12-31 and last updated on 2026-06-16.

References

Affected products (6)