CVE-2024-25004: KiTTY versions 0.76.1.13 and before is vulnerable to a stack-based buffer overflow via the username, occurs du

Q: How do I fix CVE-2024-25004?

kitty: upgrade to newer than 0.76.1.13. Exact commands for each OS are on this page.

Q: Is CVE-2024-25004 being exploited?

CVE-2024-25004 is not on the CISA Known Exploited Vulnerabilities list at the time of the last update. Check again, as this can change.

Q: What does CVE-2024-25004 affect?

CVE-2024-25004 affects kitty. Severity is high (CVSS 7.8). KiTTY versions 0.76.1.13 and before is vulnerable to a stack-based buffer overflow via the username, occurs due to insufficient bounds checking and input sanitization (at line 2600). This allows an attacker to overwrite adjacent memory, whi

Q: How urgent is CVE-2024-25004?

Priority 52/100. High severity; Public exploit reference

This month

HIGH 7.8UPGRADE

CVE-2024-25004 is a high-severity flaw (CVSS 7.8) affecting kitty. Below: why it ranks where it does, which versions are affected, what to do, and the exact commands.

KiTTY versions 0.76.1.13 and before is vulnerable to a stack-based buffer overflow via the username, occurs due to insufficient bounds checking and input sanitization (at line 2600). This allows an attacker to overwrite adjacent memory, which leads to arbitrary code execution.

Why this priority

High severity
Public exploit reference

A fixed release or distro patch exists.

Risk facts

CVSS score	7.8 (High)
Attack vector	Local
Attack complexity	Low
Privileges needed	Low
User interaction	None
EPSS exploit chance	1.8% (top 22%)
CISA exploited list	No
Weakness	CWE-787
Published	2024-02-09
Last modified	2026-06-17

Publisher (CNA): MITRE · Vendor: 9bis

Last updated 2026-06-17 · Sources: CVE Program, NVD, CISA KEV, EPSS and vendor advisories · How we score

Am I affected?

Timeline

2024-02-09 07:16 UTCPublished CVE record published
2026-06-17 07:15 UTCUpdated Record last modified

9bis kitty UPGRADE

Affected: <= 0.76.1.13

Fixed in: newer than 0.76.1.13

Safe to downgrade to: no unaffected older release

1. Check installed version

apt-cache policy kitty || rpm -q kitty || kitty --version

2. UPGRADE to newer than 0.76.1.13 (Debian / Ubuntu)

sudo apt update && sudo apt install --only-upgrade kitty

2. UPGRADE (RHEL / Amazon Linux / Fedora)

sudo dnf upgrade kitty

Note

Distros often backport fixes without changing the version number. Confirm with the distro advisory or changelog.

Public exploits and detection

Public code exists for this CVE. Treat unpatched systems as at risk, and only run PoCs in a lab.

Exploit-DB: KiTTY 0.76.1.13 - 'Start Duplicated Session Username' Buffer Overflow

Verify at the official source NVD · CVE Program · Report a problem with this page
Scores and fixes here are computed automatically from those and other public sources. Confirm with the vendor advisory before changing production systems.

Quick answers

How do I fix CVE-2024-25004?

kitty: upgrade to newer than 0.76.1.13. Exact commands for each OS are on this page.

Is CVE-2024-25004 being exploited?

CVE-2024-25004 is not on the CISA Known Exploited Vulnerabilities list at the time of the last update. Check again, as this can change.

What does CVE-2024-25004 affect?

CVE-2024-25004 affects kitty. Severity is high (CVSS 7.8). KiTTY versions 0.76.1.13 and before is vulnerable to a stack-based buffer overflow via the username, occurs due to insufficient bounds checking and input sanitization (at line 2600). This allows an attacker to overwrite adjacent memory, whi

How urgent is CVE-2024-25004?

Priority 52/100. High severity; Public exploit reference

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References

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