CVE-2025-10120: tenda ac20_firmware
CVSS: 9.0v2.0HighAnalyzed
Published 09-09-2025Last modified 09-09-2025
Vulnerability summary
CVE-2025-10120 is a high (CVSS 9.0) vulnerability in tenda ac20_firmware. EPSS estimates a 0.85% chance of exploitation in the next 30 days, higher than 57.6% of scored vulnerabilities. 1 public exploit is recorded.
CVSS score
9.0/10
010
High · v2.0 (CVE.org)EPSS score
0.85%
0%100%
Low · +0.02 pp in 30 daysKEVNot listedIn no KEV catalog
RansomwareNone recordedNo known use recorded
Public exploits1github
Timeline
- 09-09-2025PublishedVulnerability first disclosed.
- 09-09-2025Last modifiedVulnerability information updated.
Description
A vulnerability was detected in Tenda AC20 up to 16.03.08.12. The impacted element is the function strcpy of the file /goform/GetParentControlInfo. The manipulation of the argument mac results in buffer overflow. The attack may be performed from remote. The exploit is now public and may be used.
CVSS metrics
7 scores · 2 sources · 4 versionsHigh 8.7Preferred score · CVE.org (CNA)
CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N/E:PSources2 sources · 7.4–8.7
- NVDNIST7.4HighCVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N/E:P/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:XDiffers
High 8.8Preferred score · CVE.org (CNA)
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H/E:P/RL:X/RC:RSourcesAll 2 agree
- NVDNIST8.8HighCVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
High 8.8Preferred score · CVE.org (CNA)
CVSS:3.0/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H/E:P/RL:X/RC:RSourcesSingle source
High 9.0Preferred score · CVE.org (CNA)
AV:N/AC:L/Au:S/C:C/I:C/A:C/E:POC/RL:ND/RC:URSourcesAll 2 agree
- NVDNIST9.0HighAV:N/AC:L/Au:S/C:C/I:C/A:C
EPSS trend
Probability
0.85%
Chance of exploitation in the next 30 days
Percentile
58%
Versus all other CVEs
30-day change
+0.02 pp
From 0.83% on 21-09-2026
21-09-202621-10-2026
EPSS score0.85%
Known exploited
Compare KEV catalogsNot in any of the 3 tracked catalogs.
Public exploits
1 foundCve
Maturity: poc
Weaknesses
CWE · root cause- CWE-119Improper Restriction of Operations within the Bounds of a Memory BufferThe product performs operations on a memory buffer, but it reads from or writes to a memory location outside the buffer's intended boundary. This may result in read or write operations on unexpected memory locations that could be linked to other variables, data structures, or internal program data.
- CWE-120Buffer Copy without Checking Size of Input ('Classic Buffer Overflow')The product copies an input buffer to an output buffer without verifying that the size of the input buffer is less than the size of the output buffer.
Affected systems
Tenda1 product
- ac20_firmware16.03.08.0 | 16.03.08.1 | 16.03.08.2 | 16.03.08.3 | 16.03.08.4 | 16.03.08.5 | 16.03.08.6 | 16.03.08.7 | 16.03.08.8 | 16.03.08.9 | 16.03.08.10 | 16.03.08.11 | 16.03.08.12 | ≤ 16.03.08.12
1 vendor · 1 product
References
6 links- www.tenda.com.cnProduct