When processing a record type of 0x3c from a Workbook stream from an Excel file (.xls), JustSystems Ichitaro Office trusts that the size is greater than zero, subtracts one from the length, and uses this result as the size for a memcpy
Published Feb 24, 2017
9.8
CRITICALCVSS 3.0
EPSS 1.89%
Description
When processing a record type of 0x3c from a Workbook stream from an Excel file (.xls), JustSystems Ichitaro Office trusts that the size is greater than zero, subtracts one from the length, and uses this result as the size for a memcpy. This results in a heap-based buffer overflow and can lead to code execution under the context of the application.
Affected products
Default status is the baseline for the product, each version can override it (e.g. patched versions marked unaffected).
| Vendor | Product | Default status | Versions | |||
|---|---|---|---|---|---|---|
| JustSystems | Ichitaro | n/a |
|
- n/a
No data.
No Red Hat product state for this CVE.
No package ranges for this CVE.
Remediation
No remediation recorded yet.
Metrics
No CVSS v4.0 score for this CVE.
No CVSS v3.1 score for this CVE.
CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
1 other source (CVE.org) ▾
CVSS:3.0/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H
AV:N/AC:L/Au:N/C:P/I:P/A:P
This CVE is not in the KEV list.
No CISA SSVC assessment for this CVE yet.
Estimated probability of exploitation in the wild in the next 30 days (FIRST EPSS). As of Oct 1, 2026.
Score over time
2021–2026- EPSS v1
- EPSS v5
- EPSS v2
- EPSS v3
- EPSS v4
Percentile over time
- EPSS v1
- EPSS v5
- EPSS v2
- EPSS v3
- EPSS v4
Table of values (11 key points)
Flat stretches are collapsed; showing up to 120 newest points.
| Date | Score | Percentile | Model |
|---|---|---|---|
| Oct 1, 2026 | 1.89% (0.01889) | 78.79th | v5 (v2026.06.15) |
| Jun 15, 2026 | 1.89% (0.01889) | 76.77th | v5 (v2026.06.15) |
| Mar 30, 2025 | 1.18% (0.01180) | 76.82th | v4 (v2025.03.14) |
| Mar 29, 2025 | 2.27% (0.02266) | 74.36th | v4 (v2025.03.14) |
| Jul 20, 2024 | 0.47% (0.00470) | 75.85th | v3 (v2023.03.01) |
| Feb 8, 2024 | 0.47% (0.00470) | 74.87th | v3 (v2023.03.01) |
| Mar 7, 2023 | 0.47% (0.00470) | 71.80th | v3 (v2023.03.01) |
| Mar 6, 2023 | 1.58% (0.01578) | 75.39th | v2 (v2022.01.01) |
| Feb 4, 2022 | 1.58% (0.01578) | 52.24th | v2 (v2022.01.01) |
| Feb 3, 2022 | 1.09% (0.01095) | 29.04th | v5 (v2026.06.15) |
| Apr 14, 2021 | 1.09% (0.01095) | 0.00th | v1 |
References (2)
- http://www.securityfocus.com/bid/96442 vdb-entryx_refsource_BID
- http://www.talosintelligence.com/reports/TALOS-2016-0197/ x_refsource_MISC
| Link | Providers | Tags |
|---|---|---|
| http://www.securityfocus.com/bid/96442 | vdb-entryx_refsource_BID | |
| http://www.talosintelligence.com/reports/TALOS-2016-0197/ | x_refsource_MISC |
Change history (0)
No recorded changes yet.