CVE-2021-39579
HIGHCVSS 7.8/10EPSS 1.06%
Last modified
CVE-2021-39579 is a high-severity vulnerability rated 7.8/10 on the CVSS scale. An issue was discovered in swftools through 20200710. A heap-buffer-overflow exists in the function string_hash() located in q.c. EPSS estimates a 1.06% chance of exploitation in the next 30 days.
Description
An issue was discovered in swftools through 20200710. A heap-buffer-overflow exists in the function string_hash() located in q.c. It allows an attacker to cause code Execution.
Metrics
CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H
Weakness Enumeration
Affected Software
| Vendor | Product | Versions |
|---|---|---|
| Swftools | Swftools | <= 2020-07-10 |
References
- https://github.com/matthiaskramm/swftools/issues/125Exploit, Issue Tracking, Third Party Advisory
- https://github.com/matthiaskramm/swftools/issues/125Exploit, Issue Tracking, Third Party Advisory
Timeline
- Published
- Last Modified
- Status
- Modified
Frequently Asked Questions
What is CVE-2021-39579?
An issue was discovered in swftools through 20200710. A heap-buffer-overflow exists in the function string_hash() located in q.c. It allows an attacker to cause code Execution.
How severe is CVE-2021-39579?
CVE-2021-39579 has a CVSS score of 7.8/10 (HIGH severity). The EPSS model estimates a 1.06% probability of exploitation in the next 30 days.
How do I fix CVE-2021-39579?
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.
Related CVEs from 2021
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- CVE-2021-39574An issue was discovered in swftools through 20200710. A heap…7.8
- CVE-2021-39575An issue was discovered in swftools through 20200710. A NULL…5.5
- CVE-2021-39577An issue was discovered in swftools through 20200710. A heap…7.8
- CVE-2021-3958Improper Handling of Parameters vulnerability in Ipack Autom…9.8
- CVE-2021-39582An issue was discovered in swftools through 20200710. A heap…7.8
- CVE-2021-39583An issue was discovered in swftools through 20200710. A NULL…5.5
- CVE-2021-39584An issue was discovered in swftools through 20200710. A NULL…5.5
- CVE-2021-39585An issue was discovered in swftools through 20200710. A NULL…5.5
- CVE-2021-39587An issue was discovered in swftools through 20200710. A NULL…5.5
Are you affected by CVE-2021-39579?
Run a free Strix scan to check your systems for this vulnerability.
Scan your code nowSource: NVD / NIST