https://patchthecve.com/CVEs with upgrade or downgrade fix stepshttps://patchthecve.com/cve/CVE-2021-45911.htmlhttps://patchthecve.com/cve/CVE-2021-45911.htmlWed, 17 Jun 2026 04:14:14 +0000HIGH 7.8: An issue was discovered in gif2apng 1.9. There is a heap-based buffer overflow in the main function. It allows an attacker to write 2 bytes outside the boundaries of the buffer.https://patchthecve.com/cve/CVE-2021-45910.htmlhttps://patchthecve.com/cve/CVE-2021-45910.htmlWed, 17 Jun 2026 04:14:14 +0000HIGH 7.8: An issue was discovered in gif2apng 1.9. There is a heap-based buffer overflow within the main function. It allows an attacker to write data outside of the allocated buffer. The attacker has control over a part of the address that data is written to, control over the written data, and (to some extenhttps://patchthecve.com/cve/CVE-2021-45909.htmlhttps://patchthecve.com/cve/CVE-2021-45909.htmlWed, 17 Jun 2026 04:14:14 +0000HIGH 7.8: An issue was discovered in gif2apng 1.9. There is a heap-based buffer overflow vulnerability in the DecodeLZW function. It allows an attacker to write a large amount of arbitrary data outside the boundaries of a buffer.https://patchthecve.com/cve/CVE-2021-45908.htmlhttps://patchthecve.com/cve/CVE-2021-45908.htmlWed, 17 Jun 2026 04:14:14 +0000HIGH 7.8: An issue was discovered in gif2apng 1.9. There is a stack-based buffer overflow involving a while loop. An attacker has little influence over the data written to the stack, making it unlikely that the flow of control can be subverted.https://patchthecve.com/cve/CVE-2021-45907.htmlhttps://patchthecve.com/cve/CVE-2021-45907.htmlWed, 17 Jun 2026 04:14:13 +0000HIGH 7.8: An issue was discovered in gif2apng 1.9. There is a stack-based buffer overflow involving a for loop. An attacker has little influence over the data written to the stack, making it unlikely that the flow of control can be subverted.