MEDIUM
In Artifex MuPDF 1.13.0, the fz_append_byte function in fitz/buffer.c allows remote attackers to cause a denial of service (segmentation fault) via a crafted pdf file
Published Sep 6, 2018
5.5
MEDIUMCVSS 3.0
EPSS 1.47%
Description
In Artifex MuPDF 1.13.0, the fz_append_byte function in fitz/buffer.c allows remote attackers to cause a denial of service (segmentation fault) via a crafted pdf file. This is caused by a pdf/pdf-device.c pdf_dev_alpha array-index underflow.
Affected products
Remediation
No remediation recorded yet.
Metrics
No CVSS v4.0 score for this CVE.
No CVSS v3.1 score for this CVE.
5.5 MEDIUM NVD
CVSS:3.0/AV:L/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:H
Attack Vector Local
Attack Complexity Low
Privileges Required None
User Interaction Required
Scope Unchanged
Confidentiality Impact None
Integrity Impact None
Availability Impact High
4.3 MEDIUM NVD
AV:N/AC:M/Au:N/C:N/I:N/A:P
Access Vector Network
Access Complexity Medium
Authentication None
Confidentiality Impact None
Integrity Impact None
Availability Impact Partial
This CVE is not in the KEV list.
No CISA SSVC assessment for this CVE yet.
1.47% 0.01470
Estimated probability of exploitation in the wild in the next 30 days (FIRST EPSS). As of Oct 1, 2026.
EPSS probability 0.01470
Score over time
2021–2026- EPSS v1
- EPSS v5
- EPSS v2
- EPSS v3
Percentile over time
- EPSS v1
- EPSS v5
- EPSS v2
- EPSS v3
Table of values (9 key points)
Flat stretches are collapsed; showing up to 120 newest points.
| Date | Score | Percentile | Model |
|---|---|---|---|
| Oct 1, 2026 | 1.47% (0.01470) | 72.81th | v5 (v2026.06.15) |
| Aug 23, 2026 | 2.23% (0.02226) | 81.19th | v5 (v2026.06.15) |
| Jul 20, 2024 | 0.10% (0.00100) | 41.72th | v3 (v2023.03.01) |
| Jul 10, 2024 | 0.10% (0.00097) | 41.08th | v3 (v2023.03.01) |
| Mar 7, 2023 | 0.10% (0.00097) | 39.04th | v3 (v2023.03.01) |
| Mar 6, 2023 | 1.05% (0.01055) | 52.13th | v2 (v2022.01.01) |
| Feb 4, 2022 | 1.05% (0.01055) | 27.52th | v2 (v2022.01.01) |
| Feb 3, 2022 | 0.98% (0.00976) | 26.54th | v5 (v2026.06.15) |
| Apr 14, 2021 | 0.98% (0.00976) | 0.00th | v1 |
Weaknesses (1)
References (3)
- https://bugs.ghostscript.com/show_bug.cgi?id=699685 ExploitThird Party Advisory
- https://cgit.ghostscript.com/cgi-bin/cgit.cgi/mupdf.git/commit/?id=38f883fe129a5e89306252a4676eaaf4bc968824
- https://lists.debian.org/debian-lts-announce/2020/07/msg00019.html mailing-list
| Link | Providers | Tags |
|---|---|---|
| https://bugs.ghostscript.com/show_bug.cgi?id=699685 | ExploitThird Party Advisory | |
| https://cgit.ghostscript.com/cgi-bin/cgit.cgi/mupdf.git/commit/?id=38f883fe129a5e89306252a4676eaaf4bc968824 | ||
| https://lists.debian.org/debian-lts-announce/2020/07/msg00019.html | mailing-list |
Change history (0)
No recorded changes yet.
Sources
CVE.org / MITRE
Status PUBLISHED
Assigner mitre
Published Sep 6, 2018
Updated Sep 12, 2024
Reserved Sep 6, 2018
Link CVE-2018-16648
CISA Vulnrichment
Updated n/a