CVE-2016-9843
CRITICALCVSS 9.8/10EPSS 5.95%
Last modified
CVE-2016-9843 is a critical-severity vulnerability rated 9.8/10 on the CVSS scale. The crc32_big function in crc32.c in zlib 1.2.8 might allow context-dependent attackers to have unspecified impact via vectors involving big-endian CRC calculation.. EPSS estimates a 5.95% chance of exploitation in the next 30 days.
Description
The crc32_big function in crc32.c in zlib 1.2.8 might allow context-dependent attackers to have unspecified impact via vectors involving big-endian CRC calculation.
Metrics
Affected Software
| Vendor | Product | Versions | Update |
|---|---|---|---|
| Zlib | Zlib | >= 1.2.0, < 1.2.9 | — |
| Opensuse | Leap | 42.1 | — |
| Opensuse | Leap | 42.2 | — |
| Opensuse | Opensuse | 13.2 | — |
| Debian | Debian Linux | 8.0 | — |
| Canonical | Ubuntu Linux | 16.04 | — |
| Canonical | Ubuntu Linux | 18.04 | — |
| Oracle | Database Server | 18c | — |
| Oracle | Jdk | 1.6.0 | Update161 |
| Oracle | Jdk | 1.7.0 | Update151 |
| Oracle | Jdk | 1.8.0 | Update144 |
| Oracle | Jre | 1.6.0 | Update161 |
| Oracle | Jre | 1.7.0 | Update151 |
| Oracle | Jre | 1.8.0 | Update144 |
| Oracle | Mysql | >= 5.5.0, <= 5.5.61 | — |
| Oracle | Mysql | >= 5.6.0, <= 5.6.41 | — |
| Oracle | Mysql | >= 5.7.0, <= 5.7.23 | — |
| Oracle | Mysql | >= 8.0.0, <= 8.0.12 | — |
| Redhat | Satellite | 5.8 | — |
| Redhat | Enterprise Linux Desktop | 6.0 | — |
| Redhat | Enterprise Linux Desktop | 7.0 | — |
| Redhat | Enterprise Linux Eus | 7.4 | — |
| Redhat | Enterprise Linux Eus | 7.5 | — |
| Redhat | Enterprise Linux Server | 6.0 | — |
| Redhat | Enterprise Linux Server | 7.0 | — |
| Redhat | Enterprise Linux Workstation | 6.0 | — |
| Redhat | Enterprise Linux Workstation | 7.0 | — |
| Apple | Iphone Os | < 11 | — |
| Apple | Mac Os X | >= 10.0.0, < 10.13.0 | — |
| Apple | Tvos | < 11.0 | — |
| Apple | Watchos | < 4 | — |
| Netapp | Active Iq Unified Manager | >= 7.3 | — |
| Netapp | Active Iq Unified Manager | >= 9.5 | — |
| Netapp | Oncommand Insight | All versions | — |
| Netapp | Oncommand Workflow Automation | All versions | — |
| Netapp | Snapcenter | All versions | — |
| Mariadb | Mariadb | >= 5.5.0, < 5.5.62 | — |
| Mariadb | Mariadb | >= 10.0.0, < 10.0.37 | — |
| Mariadb | Mariadb | >= 10.1.0, < 10.1.37 | — |
| Mariadb | Mariadb | >= 10.2.0, < 10.2.19 | — |
| Mariadb | Mariadb | >= 10.3.0, < 10.3.11 | — |
| Nodejs | Node.Js | >= 4.0.0, <= 4.1.2 | — |
| Nodejs | Node.Js | >= 4.2.0, < 4.8.2 | — |
| Nodejs | Node.Js | >= 6.0.0, <= 6.8.1 | — |
| Nodejs | Node.Js | >= 6.9.0, < 6.10.2 | — |
| Nodejs | Node.Js | >= 7.0.0, < 7.6.0 | — |
References
Timeline
- Published
- Last Modified
- Status
- Modified
Frequently Asked Questions
What is CVE-2016-9843?
The crc32_big function in crc32.c in zlib 1.2.8 might allow context-dependent attackers to have unspecified impact via vectors involving big-endian CRC calculation.
How severe is CVE-2016-9843?
CVE-2016-9843 has a CVSS score of 9.8/10 (CRITICAL severity). The EPSS model estimates a 5.95% probability of exploitation in the next 30 days.
How do I fix CVE-2016-9843?
Check the vendor references and advisories linked above for patched versions and mitigation guidance. You can also run a Strix scan to test if your systems are affected.
How Strix Helps
- How Strix found a critical auth bypass in etcdStrix autonomously discovered a critical authentication bypass in etcd, later designated CVE-2026-33413.
- Autonomous PentestingAI agents that find and validate exploitable vulnerabilities like this one across your applications.
- PR ReviewsPentest every pull request so vulnerable code is caught before it ships to production.
- AI Penetration TestingHow AI-driven penetration testing continuously covers your attack surface.
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Are you affected by CVE-2016-9843?
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Scan your code nowSource: NVD / NIST