Libsixel

libsixel

CVEs (43)

CVE VENDORS PRODUCTS UPDATED PUBLISHED CVSS
CVE-2025-61146 2Libsixel Project Saitoha 2Libsixel Libsixel Jun 17, 2026 Feb 23, 2026 N/A· v4 4.0 MEDIUM· v3 N/A· v2 saitoha libsixel until v1.8.7 was discovered to contain a memory leak via the component malloc_stub.c.
CVE-2025-9300 2Libsixel Project Saitoha 2Libsixel Libsixel Jun 17, 2026 Aug 21, 2025 1.9 LOW· v4 7.8 HIGH· v3 4.3 MEDIUM· v2 A vulnerability was found in saitoha libsixel up to 1.10.3. Affected by this issue is the function sixel_debug_print_palette of the file src/encoder.c of the component img2sixel. The manipulation results in stack-based b...Show more A vulnerability was found in saitoha libsixel up to 1.10.3. Affected by this issue is the function sixel_debug_print_palette of the file src/encoder.c of the component img2sixel. The manipulation results in stack-based buffer overflow. The attack must be initiated from a local position. The exploit has been made public and could be used. The patch is identified as 316c086e79d66b62c0c4bc66229ee894e4fdb7d1. Applying a patch is advised to resolve this issue.Show less
CVE-2022-29978 2Libsixel Project Saitoha 2Libsixel Libsixel Jun 17, 2026 May 11, 2022 N/A· v4 6.5 MEDIUM· v3 4.3 MEDIUM· v2 There is a floating point exception error in sixel_encoder_do_resize, encoder.c:633 in libsixel img2sixel 1.8.6. Remote attackers could leverage this vulnerability to cause a denial-of-service via a crafted JPEG file.
CVE-2022-29977 2Libsixel Project Saitoha 2Libsixel Libsixel Jun 17, 2026 May 11, 2022 N/A· v4 6.5 MEDIUM· v3 4.3 MEDIUM· v2 There is an assertion failure error in stbi__jpeg_huff_decode, stb_image.h:1894 in libsixel img2sixel 1.8.6. Remote attackers could leverage this vulnerability to cause a denial-of-service via a crafted JPEG file.
CVE-2021-40656 2Libsixel Libsixel Project 2Libsixel Libsixel Jun 17, 2026 Apr 8, 2022 N/A· v4 8.8 HIGH· v3 6.8 MEDIUM· v2 libsixel before 1.10 is vulnerable to Buffer Overflow in libsixel/src/quant.c:867.
CVE-2022-27046 2Libsixel Project Saitoha 2Libsixel Libsixel Jun 17, 2026 Apr 8, 2022 N/A· v4 8.8 HIGH· v3 6.8 MEDIUM· v2 libsixel 1.8.6 suffers from a Heap Use After Free vulnerability in in libsixel/src/dither.c:388.
CVE-2022-27044 2Libsixel Project Saitoha 2Libsixel Libsixel Jun 17, 2026 Apr 8, 2022 N/A· v4 8.8 HIGH· v3 6.8 MEDIUM· v2 libsixel 1.8.6 is affected by Buffer Overflow in libsixel/src/quant.c:876.
CVE-2021-41715 2Libsixel Libsixel Project 2Libsixel Libsixel Jun 17, 2026 Apr 8, 2022 N/A· v4 8.8 HIGH· v3 6.8 MEDIUM· v2 libsixel 1.10.0 is vulnerable to Use after free in libsixel/src/dither.c:379.
CVE-2022-27938 3Libsixel Libsixel ProjectSaitoha 3Libsixel LibsixelLibsixel Jun 17, 2026 Mar 26, 2022 N/A· v4 5.5 MEDIUM· v3 4.3 MEDIUM· v2 stb_image.h (aka the stb image loader) 2.19, as used in libsixel and other products, has a reachable assertion in stbi__create_png_image_raw.
CVE-2021-46700 2Libsixel Project Saitoha 2Libsixel Libsixel Jun 17, 2026 Feb 19, 2022 N/A· v4 6.5 MEDIUM· v3 4.3 MEDIUM· v2 In libsixel 1.8.6, sixel_encoder_output_without_macro (called from sixel_encoder_encode_frame in encoder.c) has a double free.
CVE-2021-45340 2Libsixel Libsixel Project 2Libsixel Libsixel Jun 17, 2026 Jan 25, 2022 N/A· v4 6.5 MEDIUM· v3 4.3 MEDIUM· v2 In Libsixel prior to and including v1.10.3, a NULL pointer dereference in the stb_image.h component of libsixel allows attackers to cause a denial of service (DOS) via a crafted PICT file.
CVE-2020-21548 2Libsixel Project Saitoha 2Libsixel Libsixel Jun 17, 2026 Sep 17, 2021 N/A· v4 8.8 HIGH· v3 6.8 MEDIUM· v2 Libsixel 1.8.3 contains a heap-based buffer overflow in the sixel_encode_highcolor function in tosixel.c.
CVE-2020-21547 2Libsixel Project Saitoha 2Libsixel Libsixel Jun 17, 2026 Sep 17, 2021 N/A· v4 8.8 HIGH· v3 6.8 MEDIUM· v2 Libsixel 1.8.2 contains a heap-based buffer overflow in the dither_func_fs function in tosixel.c.
CVE-2020-21050 2Libsixel Project Saitoha 2Libsixel Libsixel Jun 17, 2026 Sep 14, 2021 N/A· v4 6.5 MEDIUM· v3 4.3 MEDIUM· v2 Libsixel prior to v1.8.3 contains a stack buffer overflow in the function gif_process_raster at fromgif.c.
CVE-2020-21049 2Libsixel Project Saitoha 2Libsixel Libsixel Jun 17, 2026 Sep 14, 2021 N/A· v4 6.5 MEDIUM· v3 4.3 MEDIUM· v2 An invalid read in the stb_image.h component of libsixel prior to v1.8.5 allows attackers to cause a denial of service (DOS) via a crafted PSD file.
CVE-2020-21048 2Libsixel Project Saitoha 2Libsixel Libsixel Jun 17, 2026 Sep 14, 2021 N/A· v4 6.5 MEDIUM· v3 4.3 MEDIUM· v2 An issue in the dither.c component of libsixel prior to v1.8.4 allows attackers to cause a denial of service (DOS) via a crafted PNG file.
CVE-2020-21677 2Libsixel Project Saitoha 2Libsixel Libsixel Jun 17, 2026 Aug 10, 2021 N/A· v4 6.5 MEDIUM· v3 4.3 MEDIUM· v2 A heap-based buffer overflow in the sixel_encoder_output_without_macro function in encoder.c of Libsixel 1.8.4 allows attackers to cause a denial of service (DOS) via converting a crafted PNG file into Sixel format.
CVE-2020-36120 2Libsixel Project Saitoha 2Libsixel Libsixel Jun 17, 2026 Apr 14, 2021 N/A· v4 7.5 HIGH· v3 5.0 MEDIUM· v2 Buffer Overflow in the "sixel_encoder_encode_bytes" function of Libsixel v1.8.6 allows attackers to cause a Denial of Service (DoS).
CVE-2020-19668 2Libsixel Project Saitoha 2Libsixel Libsixel Jun 17, 2026 Nov 20, 2020 N/A· v4 6.5 MEDIUM· v3 4.3 MEDIUM· v2 Unverified indexs into the array lead to out of bound access in the gif_out_code function in fromgif.c in libsixel 1.8.6.
CVE-2020-11721 2Libsixel Project Saitoha 2Libsixel Libsixel Jun 17, 2026 Apr 12, 2020 N/A· v4 6.5 MEDIUM· v3 4.3 MEDIUM· v2 load_png in loader.c in libsixel.a in libsixel 1.8.6 has an uninitialized pointer leading to an invalid call to free, which can cause a denial of service.

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