The iconv function in the GNU C Library (aka glibc or libc6) 2.30 to 2.32, when…
Priority LOW 25CWE-617Published · Updated
Key facts
- Attack vector
- Network
- Privileges required
- Low
- User interaction
- Required
- Attack complexity
- High
- Impact type
- Denial of service
- Confidentiality · integrity · availability
- None · None · High
- Fix status
- No fix listed
Attack profile from CVSS 3.1 · CISA ADP. Fix status from CNA. Impact type from CWE-617.
Summary
The iconv function in the GNU C Library (aka glibc or libc6) 2.30 to 2.32, when converting UCS4 text containing an irreversible character, fails an assertion in the code path and aborts the program, potentially resulting in a denial of service.
Why it matters now
Exploitation None reported CISA SSVC · not in CISA KEV
EPSS 0.01682 77th percentileScored 2026-11-07
Public exploit Yes 1 exploit referenceTagged by NVD
Fix No fix listed No fixed version in the sources yet
SSVC decision points
CISA ADP · SSVC 2.0.3
- Exploitation
- None
- Automatable
- No
- Technical impact
- Partial
The decision (Track, Attend, Act) also depends on your mission and well-being impact; see CISA's SSVC guide.
Affected products
| Vendor | Product | Affected versions | Fixed in | Status | Source |
|---|---|---|---|---|---|
| — | — | all versions | — | No fix listed | CNA |
- — Vendor— Affected all versions Fixed in — No fix listed CNA
CPE configurations NVD · 3
| CPE | Versions | Role | Vendor |
|---|---|---|---|
| cpe:2.3:a:gnu:glibc:*:*:*:*:*:*:*:* | 2.30 – 2.32 | Vulnerable | GNU |
| cpe:2.3:o:fedoraproject:fedora:32:*:*:*:*:*:*:* | 32 | Vulnerable | Fedoraproject |
| cpe:2.3:a:netapp:e-series_santricity_os_controller:*:*:*:*:*:*:*:* | 11.0.0 – 11.60.3 | Vulnerable | NetApp |
- cpe:2.3:a:gnu:glibc:*:*:*:*:*:*:*:* Versions 2.30 – 2.32 Vulnerable ·GNU
- cpe:2.3:o:fedoraproject:fedora:32:*:*:*:*:*:*:* Versions 32 Vulnerable ·Fedoraproject
- cpe:2.3:a:netapp:e-series_santricity_os_controller:*:*:*:*:*:*:*:* Versions 11.0.0 – 11.60.3 Vulnerable ·NetApp
Remediation
No fixed version listed by the sources yet.
Vendor assessments
Red Hat
Red Hat rating: Moderate. Red Hat's page for this CVE →
Not affected: 5 products
- Red Hat Enterprise Linux 5
- Red Hat Enterprise Linux 6
- Red Hat Enterprise Linux 7
- Red Hat Enterprise Linux 8
- Red Hat Enterprise Linux 9
Timeline
- 2026-10-02 Threatist record created from CVE-2020-29562
- 2026-10-03 Alias added: GHSA-9xm7-qxg2-g5p4
References
Sources
- CVE-2020-29562 · CVE Program
- CVE-2020-29562 · NVD
- FIRST EPSS
- GHSA-9xm7-qxg2-g5p4 · GitHub Advisory Database · CC BY 4.0
- CVE-2020-29562 · Red Hat security data · CC BY 4.0
This product uses the NVD API but is not endorsed or certified by the NVD. Sources and licences