CVE-2024-2961

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National Vulnerability Database Information

Description: 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.

CVSS Base Score: 7.3 (v3.1)

The CVSS Base Score is a score from 0 to 10 that represents the intrinsic severity of a vulnerability. A higher score indicates greater severity.

Value

0.02.55.07.510.0

Published on: 04/17/2024 18:15:15
Last modified: 06/17/2026 07:25:54
NIST: CVE source from the National Vulnerability Database (NVD)

CVSS Metrics Details

Base Severity: HIGH
Vector String: CVSS:3.1/AV:L/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:H
Attack Vector: LOCAL
Attack Complexity: LOW
Privileges Required: NONE
User Interaction: NONE
Scope: UNCHANGED
Confidentiality Impact: LOW
Integrity Impact: LOW
Availability Impact: HIGH

Common Weakness Enumeration (CWE)

Database CWE: v4.18

CWE-787: Out-of-bounds Write ↗

The product writes data past the end, or before the beginning, of the intended buffer.

Fonte: MITRE CWE

FIRST Information

EPSS Score: 0.8833

The EPSS (Exploit Prediction Scoring System) is a score from 0 to 1 that indicates the probability that a vulnerability will be exploited in the real world in the next 30 days. A higher value indicates a greater likelihood of exploitation.

Value

0.00.250.50.751.0

Percentile: 0.9976

The Percentile indicates how much higher this vulnerability's EPSS score is compared to all other vulnerabilities in the EPSS database. For example, a percentile of 0.90 (90%) means that 90% of vulnerabilities have an EPSS score equal to or lower than the current one.

Value

0.00.250.50.751.0

*Data updated as of: 2026-07-25

CISA Information (Known Exploited Vulnerabilities)

The CISA KEV Catalog lists vulnerabilities that have been actively exploited in the real world. If a CVE is present in this catalog, it indicates that the threat is immediate and mitigation should be a top priority.

CVE CVE-2024-2961 is not present in the CISA KEV Catalog. This indicates that it is not currently classified by CISA as an actively exploited vulnerability.

Articles published on Red Hot Cyber

NVD References

Exploit PoC from GitHub

ambionics/cnext-exploits: Exploits for CNEXT (CVE-2024-2961), a buffer overflow in the glibc's iconv()
rvzsec/CVE-2024-2961: CVE-2024–2961 Security Issue Mitigation Script
suce0155/CVE-2024-2961: CVE-2024-2961 Cnext RCE Exploit with Buddyforms 2.7.7
omarelshopky/exploit_cve-2023-26326_using_cve-2024-2961: Exploit for CVE-2023-26326 in the WordPress BuddyForms plugin, leveraging CVE-2024-2961 for remote code execution. This exploit bypasses PHP 8+ deserialization limitations by chaining vulnerabilities with php://filter.
kyotozx/CVE-2024-2961-Remote-File-Read: This script demonstrates a proof-of-concept (PoC) for exploiting a file read vulnerability in the iconv library, as detailed in Ambionics Security's blog https://www.ambionics.io/blog/iconv-cve-2024-2961-p1.