CVE-2026-110601

Exploitation

Public exploit code exists. CISA's assessment records a public proof of concept. That is not a report of exploitation in the wild.

SSVC decision

• ExploitationpocPublic proof-of-concept exploit code exists. Not a report of exploitation in the wild.
• AutomatablenoAt least one step from reconnaissance to exploitation cannot be reliably automated.
• Technical ImpactpartialSuccessful exploitation gives limited control of the vulnerable component.

CISA publishes the decision points, not a final SSVC decision. The decision also depends on mission and well-being impact, which is a property of your deployment rather than of the vulnerability.

EPSS probability

0.23% probability of exploitation activity in the next 30 days.

EPSS percentile

Equal to or higher than the score of 14.4% of scored records. A rank, not a probability.

NVD base score

5.8 (CVSS v4.0), scored by the NVD independently of the CNA.

NVD CVSS vector

CVSS:4.0/AV:L/AC:L/AT:P/PR:N/UI:P/VC:N/VI:H/VA:H/SC:N/SI:N/SA:N/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X

NVD analysis status

Deferred. NVD last modified this record on 2026-10-20.

Red Hat severity

No Red Hat rating. Red Hat rates the CVEs that affect its products.

Exploit-prediction scores from FIRST. Independent scoring and analysis status from the NVD. Vendor severity from Red Hat. Exploitation assessment and catalog membership from CISA.

Published

2026-10-14 14:16Z14 DAYS AGO

Last updated

2026-10-20 01:04Z9 DAYS AGO

Reserved

2026-10-14

Assigning CNA

VulnCheck

Record state

PUBLISHED

Severity

Medium (CVSS 5.8)

CNA CVSS vector

CVSS:4.0/AV:L/AC:L/AT:P/PR:N/UI:P/VC:N/VI:H/VA:H/SC:N/SI:N/SA:N

Weaknesses

• CWE-787Out-of-bounds WriteBase

Data version

5.2

Document digest

f8622ec8698573d6001e3ed85dd6cf7d54cb127a30fcffa4a77b2674602ca0c3

• github.comhttps://github.com/saitoha/libsixel/issues/220issue-tracking
• github.comhttps://github.com/saitoha/libsixel/commit/bdbab09816eb9188429c37a50b97c5e66dfe5047patch
• github.comlibsixel v1.8.7-r1 Release Noteshttps://github.com/saitoha/libsixel/releases/tag/v1.8.7-r1release-notes
• github.comhttps://github.com/saitoha/libsixel/blob/v1.8.7/src/fromgif.c#L182-L248technical-description
• github.comhttps://github.com/libsixel/libsixel/blob/v1.10.5/src/fromgif.c#L219-L240technical-description
• hackmd.iohttps://hackmd.io/@haind-pwn/libsixel-gif-transparent-index-oob-writethird-party-advisory
• www.vulncheck.comVulnCheck Advisory: libsixel before 1.8.7-r1 and 1.9.0 through 1.10.5 Heap Out-of-Bounds Write via GIFhttps://www.vulncheck.com/advisories/libsixel-before-1.8.7-r1-and-1.9.0-through-1.10.5-heap-out-of-bounds-write-via-gifthird-party-advisory