CVE-2024-2961

CVE-2024-2961 is a high-severity vulnerability in Gnu Glibc with a CVSS 3.x base score of 7.3. Its EPSS exploit-prediction score of 88% places it in the 100th percentile, indicating an elevated likelihood of exploitation. The underlying weakness is classified as CWE-787.

Key facts

• Severity: High (CVSS 3.x base score 7.3)
• EPSS exploit prediction: 88% (100th percentile)
• Actively exploited: Not listed in CISA KEV
• EU (EUVD) id: EUVD-2024-27902
• Weakness: CWE-787
• Affected product: Gnu Glibc
• Published: 2024-04-17
• Last modified: 2026-06-17

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.

Frequently asked questions

What is 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 the ISO-2022-CN-EXT character set, which may be used to crash an application or overwrite a neighbouring variable.

How severe is CVE-2024-2961?

CVE-2024-2961 has a CVSS 3.x base score of 7.3, rated high severity. It is exploitable over local access with low attack complexity, requires no privileges and no user interaction. Impact on confidentiality is low, integrity low, and availability high.

Is CVE-2024-2961 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 88% (100th percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2024-2961?

CVE-2024-2961 primarily affects Gnu Glibc. In total, 13 product configurations (CPEs) are listed as vulnerable; see the affected-products list for the exact versions.

How do I fix CVE-2024-2961?

Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround. Given its high severity, prioritise patching exposed systems.

Does CVE-2024-2961 have an EU (EUVD) identifier?

Yes. CVE-2024-2961 is tracked in the ENISA EU Vulnerability Database (EUVD) as EUVD-2024-27902.

When was CVE-2024-2961 published?

CVE-2024-2961 was published on 2024-04-17 and last updated on 2026-06-17.

References

• http://www.openwall.com/lists/oss-security/2024/04/17/9
• http://www.openwall.com/lists/oss-security/2024/04/18/4
• http://www.openwall.com/lists/oss-security/2024/04/24/2
• http://www.openwall.com/lists/oss-security/2024/05/27/1
• http://www.openwall.com/lists/oss-security/2024/05/27/2
• http://www.openwall.com/lists/oss-security/2024/05/27/3
• http://www.openwall.com/lists/oss-security/2024/05/27/4
• http://www.openwall.com/lists/oss-security/2024/05/27/5
• http://www.openwall.com/lists/oss-security/2024/05/27/6
• http://www.openwall.com/lists/oss-security/2024/07/22/5
• https://lists.debian.org/debian-lts-announce/2024/05/msg00001.html
• https://lists.fedoraproject.org/archives/list/[email protected]/message/BTJFBGHDYG5PEIFD5WSSSKSFZ2AZWC5N/
• https://lists.fedoraproject.org/archives/list/[email protected]/message/P3I4KYS6EU6S7QZ47WFNTPVAHFIUQNEL/
• https://lists.fedoraproject.org/archives/list/[email protected]/message/YAMJQI3Y6BHWV3CUTYBXOZONCUJNOB2Z/
• https://security.netapp.com/advisory/ntap-20240531-0002/
• https://sourceware.org/git/?p=glibc.git;a=blob;f=advisories/GLIBC-SA-2024-0004
• https://www.ambionics.io/blog/iconv-cve-2024-2961-p1
• https://www.ambionics.io/blog/iconv-cve-2024-2961-p2
• https://www.ambionics.io/blog/iconv-cve-2024-2961-p3
• https://cert-portal.siemens.com/productcert/html/ssa-082556.html

Affected products (13)

• cpe:2.3:a:gnu:glibc:*:*:*:*:*:*:*:*
• cpe:2.3:a:netapp:active_iq_unified_manager:-:*:*:*:*:vmware_vsphere:*:*
• cpe:2.3:o:debian:debian_linux:10.0:*:*:*:*:*:*:*
• cpe:2.3:o:netapp:hci_h300s_firmware:-:*:*:*:*:*:*:*
• cpe:2.3:o:netapp:hci_h500s_firmware:-:*:*:*:*:*:*:*
• cpe:2.3:o:netapp:hci_h700s_firmware:-:*:*:*:*:*:*:*
• cpe:2.3:o:netapp:hci_h410s_firmware:-:*:*:*:*:*:*:*
• cpe:2.3:o:netapp:hci_h410c_firmware:-:*:*:*:*:*:*:*
• cpe:2.3:o:netapp:hci_h610c_firmware:-:*:*:*:*:*:*:*
• cpe:2.3:o:netapp:hci_h610s_firmware:-:*:*:*:*:*:*:*
• cpe:2.3:o:netapp:hci_h615c_firmware:-:*:*:*:*:*:*:*
• cpe:2.3:o:netapp:hci_compute_node:-:*:*:*:*:*:*:*
• cpe:2.3:a:netapp:ontap_select_deploy_administration_utility:-:*:*:*:*:*:*:*

More vulnerabilities in Gnu Glibc

• CVE-2015-0235 — Critical (CVSS 10.0): Heap-based buffer overflow in the __nss_hostname_digits_dots function in glibc 2.2, and other 2.x versions before 2.18,…
• CVE-2026-5450 — Critical (CVSS 9.8): Calling the scanf family of functions with a %mc (malloc'd character match) in the GNU C Library version 2.7 to version…
• CVE-2023-25139 — Critical (CVSS 9.8): sprintf in the GNU C Library (glibc) 2.37 has a buffer overflow (out-of-bounds write) in some situations with a correct…
• CVE-2022-23219 — Critical (CVSS 9.8): The deprecated compatibility function clnt_create in the sunrpc module of the GNU C Library (aka glibc) through 2.34…
• CVE-2022-23218 — Critical (CVSS 9.8): The deprecated compatibility function svcunix_create in the sunrpc module of the GNU C Library (aka glibc) through 2.34…
• CVE-2021-33574 — Critical (CVSS 9.8): The mq_notify function in the GNU C Library (aka glibc) versions 2.32 and 2.33 has a use-after-free. It may use the…

All CVEs affecting Gnu Glibc →

Other CWE-787 (Out-of-bounds Write) vulnerabilities

• CVE-2026-42369 — Critical (CVSS 10.0): GV-VMS V20 is a Video Monitoring Software used to gather the feeds of many surveillance cameras and manage other…
• CVE-2026-4746 — Critical (CVSS 10.0): Out-of-bounds Write vulnerability in timeplus-io proton (base/poco/Foundation/src‎ modules). This vulnerability is…
• CVE-2025-43300 — Critical (CVSS 10.0): An out-of-bounds write issue was addressed with improved bounds checking. This issue is fixed in iOS 15.8.5 and iPadOS…
• CVE-2025-24201 — Critical (CVSS 10.0): An out-of-bounds write issue was addressed with improved checks to prevent unauthorized actions. This issue is fixed in…
• CVE-2024-42479 — Critical (CVSS 10.0): llama.cpp provides LLM inference in C/C++. The unsafe `data` pointer member in the `rpc_tensor` structure can cause…
• CVE-2024-39791 — Critical (CVSS 10.0): Stack-based buffer overflow vulnerabilities affecting Vonets industrial wifi bridge relays and wifi bridge…

Browse all CWE-787 (Out-of-bounds Write) vulnerabilities →