CVE-2021-39582
CVE-2021-39582 is a high-severity vulnerability in Swftools with a CVSS 3.x base score of 7.8. It is not currently listed as actively exploited by CISA, and its EPSS exploit-prediction score is low. The underlying weakness is classified as CWE-787.
Key facts
- Severity: High (CVSS 3.x base score 7.8)
- CVSS v2: 6.8
- EPSS exploit prediction: 1% (60th percentile)
- Actively exploited: Not listed in CISA KEV
- Weakness: CWE-787
- Affected product: Swftools
- Published:
- Last modified:
Description
An issue was discovered in swftools through 20200710. A heap-buffer-overflow exists in the function swf_GetPlaceObject() located in swfobject.c. It allows an attacker to cause code Execution.
Frequently asked questions
- What is CVE-2021-39582?
- An issue was discovered in swftools through 20200710. A heap-buffer-overflow exists in the function swf_GetPlaceObject() located in swfobject.c. It allows an attacker to cause code Execution.
- How severe is CVE-2021-39582?
- CVE-2021-39582 has a CVSS 3.x base score of 7.8, rated high severity. It is exploitable over local access with low attack complexity, requires no privileges and user interaction. Impact on confidentiality is high, integrity high, and availability high.
- Is CVE-2021-39582 being actively exploited?
- It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 1% (60th percentile), an estimate of the probability of exploitation in the next 30 days.
- What products are affected by CVE-2021-39582?
- CVE-2021-39582 affects Swftools. See the affected-products list for the exact vulnerable versions.
- How do I fix CVE-2021-39582?
- 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-2021-39582 published?
- CVE-2021-39582 was published on 2021-09-20 and last updated on 2026-06-17.
References
Affected products (1)
- cpe:2.3:a:swftools:swftools:*:*:*:*:*:*:*:*
More vulnerabilities in Swftools
- CVE-2022-40009 — Critical (CVSS 9.8): SWFTools commit 772e55a was discovered to contain a heap-use-after-free via the function grow_unicode at /lib/ttf.c.
- CVE-2022-40008 — Critical (CVSS 9.8): SWFTools commit 772e55a was discovered to contain a heap-buffer overflow via the function readU8 at /lib/ttf.c.
- CVE-2010-1516 — Critical (CVSS 9.3): Multiple integer overflows in SWFTools 0.9.1 allow remote attackers to execute arbitrary code via (1) a crafted PNG…
- CVE-2024-26339 — Critical (CVSS 9.1): swftools v0.9.2 was discovered to contain a strcpy parameter overlap via /home/swftools/src/swfc+0x48318a.
- CVE-2017-11101 — High (CVSS 8.8): When SWFTools 0.9.2 processes a crafted file in swfcombine, it can lead to a NULL Pointer Dereference in the…
- CVE-2017-11100 — High (CVSS 8.8): When SWFTools 0.9.2 processes a crafted file in swfextract, it can lead to a NULL Pointer Dereference in the…
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