CVE-2026-52859
Fixed in a distro release EPSS <1%CVSS 6.9
Vim is an open source, command line text editor. Prior to version 9.2.0565, the update_snapshot() function in src/terminal.c copies the visible terminal screen into the scrollback buffer when a snapshot is taken. For each screen cell it walks the cell's chars[] array with no upper bound, stopping only when it encounters a NUL terminator. When a cell legitimately fills all VTERM_MAX_CHARS_PER_CELL (6) slots — a base character plus five combining marks — the bundled libvterm returns the array without a terminating NUL, so the loop reads past the fixed six-element array and appends the out-of-bounds values to a buffer reserved for only six characters. A program whose output is rendered inside a :terminal window can trigger this with a short byte sequence and no Vim scripting, leading to a crash. This issue has been patched in version 9.2.0565.
Products: vim
Distro releases
| Release | Package | Fixed in |
|---|---|---|
| AlmaLinux 10 | vim-X11 | 2:9.1.083-9.el10_2.20 |
| AlmaLinux 10 | vim-common | 2:9.1.083-9.el10_2.20 |
| AlmaLinux 10 | vim-data | 2:9.1.083-9.el10_2.20 |
| AlmaLinux 10 | vim-enhanced | 2:9.1.083-9.el10_2.20 |
| AlmaLinux 10 | vim-filesystem | 2:9.1.083-9.el10_2.20 |
| AlmaLinux 10 | vim-minimal | 2:9.1.083-9.el10_2.20 |
| AlmaLinux 10 | xxd | 2:9.1.083-9.el10_2.20 |
| AlmaLinux 8 | vim-X11 | 2:8.0.1763-31.el8_10.7 |
| AlmaLinux 8 | vim-common | 2:8.0.1763-31.el8_10.7 |
| AlmaLinux 8 | vim-enhanced | 2:8.0.1763-31.el8_10.7 |
| AlmaLinux 8 | vim-filesystem | 2:8.0.1763-31.el8_10.7 |
| AlmaLinux 8 | vim-minimal | 2:8.0.1763-31.el8_10.7 |
| AlmaLinux 9 | vim-X11 | 2:8.2.2637-26.el9_8.21 |
| AlmaLinux 9 | vim-common | 2:8.2.2637-26.el9_8.21 |
| AlmaLinux 9 | vim-enhanced | 2:8.2.2637-26.el9_8.21 |
| AlmaLinux 9 | vim-filesystem | 2:8.2.2637-26.el9_8.21 |
| AlmaLinux 9 | vim-minimal | 2:8.2.2637-26.el9_8.21 |
| Alpine 3.23 | vim | 9.2.0567-r0 |
| Amazon Linux 2 | vim-X11 | 2:9.0.2153-1.amzn2.0.11 |
| Amazon Linux 2 | vim-common | 2:9.0.2153-1.amzn2.0.11 |
| Amazon Linux 2 | vim-data | 2:9.0.2153-1.amzn2.0.11 |
| Amazon Linux 2 | vim-enhanced | 2:9.0.2153-1.amzn2.0.11 |
| Amazon Linux 2 | vim-filesystem | 2:9.0.2153-1.amzn2.0.11 |
| Amazon Linux 2 | vim-minimal | 2:9.0.2153-1.amzn2.0.11 |
| Amazon Linux 2 | xxd | 2:9.0.2153-1.amzn2.0.11 |
| Amazon Linux 2023 | vim-common | 2:9.2.597-1.amzn2023.0.1 |
| Amazon Linux 2023 | vim-data | 2:9.2.597-1.amzn2023.0.1 |
| Amazon Linux 2023 | vim-default-editor | 2:9.2.597-1.amzn2023.0.1 |
| Amazon Linux 2023 | vim-enhanced | 2:9.2.597-1.amzn2023.0.1 |
| Amazon Linux 2023 | vim-filesystem | 2:9.2.597-1.amzn2023.0.1 |
| Amazon Linux 2023 | vim-minimal | 2:9.2.597-1.amzn2023.0.1 |
| Amazon Linux 2023 | xxd | 2:9.2.597-1.amzn2023.0.1 |
| Debian 12 | vim | no fix |
| Debian 13 | vim | no fix |
| Debian 14 | vim | 2:9.2.0782-1 |
| Red Hat Enterprise Linux 10.2 | vim | 2:9.1.083-9.el10_2.20 |
| Red Hat Enterprise Linux 10.2 | vim-X11 | 2:9.1.083-9.el10_2.20 |
| Red Hat Enterprise Linux 10.2 | vim-common | 2:9.1.083-9.el10_2.20 |
| Red Hat Enterprise Linux 10.2 | vim-enhanced | 2:9.1.083-9.el10_2.20 |
| Red Hat Enterprise Linux 8 | vim | 2:8.0.1763-31.el8_10.7 |
| Red Hat Enterprise Linux 8 | vim-X11 | 2:8.0.1763-31.el8_10.7 |
| Red Hat Enterprise Linux 8 | vim-common | 2:8.0.1763-31.el8_10.7 |
| Red Hat Enterprise Linux 8 | vim-enhanced | 2:8.0.1763-31.el8_10.7 |
| Red Hat Enterprise Linux 9 | vim | 2:8.2.2637-26.el9_8.21 |
| Red Hat Enterprise Linux 9 | vim-X11 | 2:8.2.2637-26.el9_8.21 |
| Red Hat Enterprise Linux 9 | vim-common | 2:8.2.2637-26.el9_8.21 |
| Red Hat Enterprise Linux 9 | vim-enhanced | 2:8.2.2637-26.el9_8.21 |
| Red Hat hummingbird 1 | vim | 0:9.2.967-1.1.hum1 |
| Red Hat hummingbird 1 | vim-X11 | 0:9.2.967-1.1.hum1 |
| Red Hat hummingbird 1 | vim-common | 0:9.2.967-1.1.hum1 |
| Red Hat hummingbird 1 | vim-data | 0:9.2.967-1.1.hum1 |
| Red Hat hummingbird 1 | vim-default-editor | 0:9.2.967-1.1.hum1 |
| Red Hat hummingbird 1 | vim-enhanced | 0:9.2.967-1.1.hum1 |
| Red Hat hummingbird 1 | vim-filesystem | 0:9.2.967-1.1.hum1 |
| Red Hat hummingbird 1 | vim-minimal | 0:9.2.967-1.1.hum1 |
| Red Hat hummingbird 1 | xxd | 0:9.2.967-1.1.hum1 |
| Rocky Linux 10 | vim | 2:9.1.083-9.el10_2.20 |
| Rocky Linux 8 | vim | 2:8.0.1763-31.el8_10.7 |
| Rocky Linux 9 | vim | 2:8.2.2637-26.el9_8.21 |
| Ubuntu 22.04 LTS | vim | 2:8.2.3995-1ubuntu2.32 |
| Ubuntu 24.04 LTS | vim | 2:9.1.0016-1ubuntu7.16 |
| Ubuntu 25.10 | vim | 2:9.1.0967-1ubuntu6.7 |
| Ubuntu 26.04 LTS | vim | 2:9.1.2141-1ubuntu4.5 |
| Ubuntu Pro 14.04 LTS | vim | 2:7.4.052-1ubuntu3.1+esm29 |
| Ubuntu Pro 16.04 LTS | vim | 2:7.4.1689-3ubuntu1.5+esm35 |
| Ubuntu Pro 18.04 LTS | vim | 2:8.0.1453-1ubuntu1.13+esm20 |
| Ubuntu Pro 20.04 LTS | vim | 2:8.1.2269-1ubuntu5.32+esm8 |