CVE-2024-2961
The iconv() function in the GNU C Library versions 2.39 and older may overflow the output buffer passed to it by up to 4 bytes when converting strings to...
- Published
- Apr 17, 2024
- Updated
- Jul 14, 2026
- Assigning CNA
- glibc
- Evidence observed
- Aug 8, 2026
Primary CVSS
nvd · CVSS 3.1
CVSS:3.1/AV:L/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:HHigh · next 30 days
- Percentile
- 99.8%
- Model date
- Sep 21, 2026
EPSS is a statistical estimate, not a certainty or a measure of impact. Combine it with CVSS, KEV status, exposure and your environment.
Summary
The iconv() function in the GNU C Library versions 2.39 and older may overflow the output buffer passed to it by up to 4 bytes when converting strings to the ISO-2022-CN-EXT character set, which may be used to crash an application or overwrite a neighbouring variable.
Sources
18- CVE-2024-2961Exploit
Exploits CVE-2024-2961 to read arbitrary files from vulnerable PHP applications using filter chain payloads.
- cnext-exploitsExploit
Exploits for CNEXT (CVE-2024-2961), a buffer overflow in the glibc's iconv()
- osTicketFileReadIntoRCEExploit
Full-chain exploit combining PHP filter chain injection with CVE-2024-2961 (CNEXT) for unauthenticated Remote Code Execution on vulnerable osTicket installations.
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