Libsixel
Vendor:
First CVE: Jul 15, 2018 · Active for 8 years
48
Total CVEs
More Total CVEs than 97% of tracked products
6.9
Avg CVEs / Year
Higher CVE frequency than 92% of tracked products
7.2
Avg CVSS
Higher Avg CVSS than 44% of tracked products
0.0%
KEV Rate
Bottom 1%
Trends Over Time
The number and severity of CVEs published that impact Libsixel over time
Volume of CVEsAvg CVSS Base Score
First CVE
Jul 15, 2018
8 years ago
Most Recent CVE
May 14, 2026
71 days ago
CVE Severity & Scoring
Libsixel48 CVEs
44%
46%
8%
All CVEs352,231 CVEs
45%
40%
11%
LowMediumHighCritical
Attack Vector
Local19 (39.6%)
Network29 (60.4%)
Unknown0 (0.0%)
Physical0 (0.0%)
Adjacent Network0 (0.0%)
Attack Complexity
Low46 (95.8%)
High2 (4.2%)
Unknown0 (0.0%)
User Interaction
None11 (22.9%)
Unknown0 (0.0%)
Required37 (77.1%)
Privileges Required
Low2 (4.2%)
High0 (0.0%)
None46 (95.8%)
Unknown0 (0.0%)
Top CVEs
Signals from CVEs in this product scope (48 CVEs).
48 CVEs · Highest risk first
| CVE | Published | CVSS | Risk | KEV | Exploit |
|---|---|---|---|---|---|
CVE-2025-9300HIGH 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. T | Aug 21, 2025 | 7.8 | 31 | NO | NO |
CVE-2019-19636CRITICAL An issue was discovered in libsixel 1.8.2. There is an integer overflow in the function sixel_encode_body at tosixel.c. | Dec 8, 2019 | 9.8 | 31 | NO | NO |
CVE-2019-19638CRITICAL An issue was discovered in libsixel 1.8.2. There is a heap-based buffer overflow in the function load_pnm at frompnm.c, due to an integer overflow. | Dec 8, 2019 | 9.8 | 30 | NO | NO |
CVE-2019-19635CRITICAL An issue was discovered in libsixel 1.8.2. There is a heap-based buffer overflow in the function sixel_decode_raw_impl at fromsixel.c. | Dec 8, 2019 | 9.8 | 30 | NO | NO |
CVE-2026-44636HIGH libsixel is a SIXEL encoder/decoder implementation derived from kmiya's sixel. From to 1.8.7-r1, signed integer overflow in sixel_encode_highcolor's allocation size calculation ca | May 14, 2026 | 7.8 | 28 | NO | NO |
CVE-2022-27046HIGH libsixel 1.8.6 suffers from a Heap Use After Free vulnerability in in libsixel/src/dither.c:388. | Apr 8, 2022 | 8.8 | 28 | NO | NO |
CVE-2022-27044HIGH libsixel 1.8.6 is affected by Buffer Overflow in libsixel/src/quant.c:876. | Apr 8, 2022 | 8.8 | 28 | NO | NO |
CVE-2026-33023HIGH libsixel is a SIXEL encoder/decoder implementation derived from kmiya's sixel. In versions 1.8.7 and prior, when built with the --with-gdk-pixbuf2 option, a use-after-free vulnerab | Apr 14, 2026 | 7.8 | 27 | NO | NO |
CVE-2020-21548HIGH Libsixel 1.8.3 contains a heap-based buffer overflow in the sixel_encode_highcolor function in tosixel.c. | Sep 17, 2021 | 8.8 | 27 | NO | NO |
CVE-2020-21547HIGH Libsixel 1.8.2 contains a heap-based buffer overflow in the dither_func_fs function in tosixel.c. | Sep 17, 2021 | 8.8 | 27 | NO | NO |
Exploit Exposure
Signals from CVEs in this product scope (48 CVEs).
CISA KEV
0 CVEs
0.0% of CVEs· Bottom 1%
Metasploit
0 CVEs
0.0% of CVEs· Bottom 1%
Nuclei
0 CVEs
0.0% of CVEs· Bottom 1%
ExploitDB
0 CVEs
0.0% of CVEs· Bottom 1%
Social Chatter
Signals from CVEs in this product scope (48 CVEs).
Media Mentions
Signals from CVEs in this product scope (48 CVEs).
Top CNAs Publishing CVEs For Libsixel
Top CWEs
Versions
| Version | CVE Count | Avg CVSS | Avg EPSS | KEV | Exploits |
|---|---|---|---|---|---|
| 1.8.6 | 8 | 7.2 | 1.0% | 0 | 0 |
| 1.8.4 | 4 | 8.2 | 1.0% | 0 | 0 |
| 1.8.3 | 1 | 8.8 | 1.1% | 0 | 0 |
| 1.8.2 | 16 | 7.5 | 1.0% | 0 | 0 |
| 1.8.1 | 2 | 7.5 | 1.4% | 0 | 0 |