CVE-2023-31475
The function guci2_get() found in libglutil.so has a buffer overflow when an item is requested from a UCI context, and the value is pasted into a char pointer to a buffer without checking the size of the buffer.
Does this matter?
EPSS puts the probability of exploitation in the next 30 days at 13.7%, higher than 97% of all known CVEs. Patch or mitigate before the next change window.
Description
An issue was discovered on GL.iNet devices before 3.216. The function guci2_get() found in libglutil.so has a buffer overflow when an item is requested from a UCI context, and the value is pasted into a char pointer to a buffer without checking the size of the buffer.
- CVSS 3.1
- 9.8 CRITICALCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
- EPSS
- 13.74% probability · 97th percentile
- Public exploits
- None in Exploit-DB
- CISA KEV
- Not listed
- Weakness
- CWE-120
- Affected
- gl-inet/gl-s20 firmware · gl-inet/gl-x3000 firmware · gl-inet/gl-mt3000 firmware · gl-inet/gl-mt2500 firmware · gl-inet/gl-mt2500a firmware · gl-inet/gl-axt1800 firmware · gl-inet/gl-a1300 firmware · gl-inet/gl-ax1800 firmware · gl-inet/gl-sft1200 firmware · gl-inet/gl-mt1300 firmware · gl-inet/gl-e750 firmware · gl-inet/gl-mv1000 firmware · gl-inet/gl-mv1000w firmware · gl-inet/gl-s10 firmware · gl-inet/gl-s200 firmware · gl-inet/gl-s1300 firmware · gl-inet/gl-sf1200 firmware · gl-inet/gl-b1300 firmware · gl-inet/gl-b2200 firmware · gl-inet/gl-ap1300 firmware · +12 more
- Source
- cve@mitre.org
EPSS 13.7% since 3 November 2026; no change recorded yet. The dashed line is the ten per cent mark our analysts treat as “patch before the next change window”. Points are recorded when the score first appears and whenever it moves by a percentage point or more.
References
- https://github.com/gl-inet/CVE-issues/blob/main/3.215/Buffer_Overflow.mdExploit, Third Party Advisory
- https://justinapplegate.me/2023/glinet-CVE-2023-31475/
- https://www.gl-inet.comVendor Advisory
- https://github.com/gl-inet/CVE-issues/blob/main/3.215/Buffer_Overflow.mdExploit, Third Party Advisory
- https://justinapplegate.me/2023/glinet-CVE-2023-31475/
- https://www.gl-inet.comVendor Advisory
Source: NVD record, EPSS from FIRST.org, KEV from CISA, exploits from Exploit-DB. Refreshed daily. Download this record as JSON.