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Rapid7 Vulnerability Database (full)•added 2026/04/14 12:00 a.m.•4 views

CVE-2026-33021: Use After Free

libsixel is a SIXEL encoder/decoder implementation derived from kmiya's sixel. Versions 1.8.7 and prior contain a use-after-free vulnerability in sixelencoderencodebytes because sixelframeinit stores the caller-owned pixel buffer pointer directly in frame-pixels without making a defensive copy...

7.3CVSS6.6AI score0.00211EPSS

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osv_cve•added 2021/04/14 2:15 p.m.•26 views

CVE-2020-36120

Buffer Overflow in the "sixelencoderencodebytes" function of Libsixel v1.8.6 allows attackers to cause a Denial of Service DoS...

7.5CVSS6.7AI score

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Prion•added 2021/04/14 2:15 p.m.•31 views

Buffer overflow

Buffer Overflow in the "sixelencoderencodebytes" function of Libsixel v1.8.6 allows attackers to cause a Denial of Service DoS...

5CVSS7.4AI score0.01241EPSS

SaveExploits1References1Affected Software1

Mend•added 2021/04/14 1:50 p.m.•6 views

CVE-2020-36120

Buffer Overflow in the "sixelencoderencodebytes" function of Libsixel v1.8.6 allows attackers to cause a Denial of Service DoS...

8.7CVSS0.01241EPSS

SaveExploits1References2

Debian CVE•added 2021/04/14 1:50 p.m.•47 views

CVE-2020-36120

Removed by vendor...

7.5CVSS7.6AI score0.01241EPSS

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Rapid7 Vulnerability Database (full)•added 2021/04/14 12:00 a.m.•8 views

CVE-2020-36120: Buffer Copy without Checking Size of Input

Buffer Overflow in the "sixelencoderencodebytes" function of Libsixel v1.8.6 allows attackers to cause a Denial of Service DoS...

7.5CVSS5.8AI score0.01241EPSS

SaveExploits1References2

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