CVE-2025-11123: tenda ac18_firmware
CVSS: 9.0v2.0HighAnalyzed
Published 28-09-2025Last modified 29-09-2025
Vulnerability summary
CVE-2025-11123 is a high (CVSS 9.0) vulnerability in tenda ac18_firmware. EPSS estimates a 0.82% chance of exploitation in the next 30 days, higher than 56.7% of scored vulnerabilities. 1 public exploit is recorded.
CVSS score
9.0/10
010
High · v2.0 (CVE.org)EPSS score
0.82%
0%100%
Low · +0.02 pp in 30 daysKEVNot listedIn no KEV catalog
RansomwareNone recordedNo known use recorded
Public exploits1github
Timeline
- 28-09-2025PublishedVulnerability first disclosed.
- 29-09-2025Last modifiedVulnerability information updated.
Description
A flaw has been found in Tenda AC18 15.03.05.19. This impacts an unknown function of the file /goform/saveAutoQos. This manipulation of the argument enable causes stack-based buffer overflow. The attack may be initiated remotely. The exploit has been published 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
0.82%
Chance of exploitation in the next 30 days
Percentile
57%
Versus all other CVEs
30-day change
+0.02 pp
From 0.80% on 21-09-2026
21-09-202621-10-2026
EPSS score0.82%
Known exploited
Compare KEV catalogsNot in any of the 3 tracked catalogs.
Public exploits
1 foundIot Vulnerable
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-121Stack-based Buffer OverflowA stack-based buffer overflow condition is a condition where the buffer being overwritten is allocated on the stack (i.e., is a local variable or, rarely, a parameter to a function).
Affected systems
Tenda1 product
- ac18_firmware15.03.05.19
1 vendor · 1 product
References
6 links- github.com/noahze01/IoT-vulnerable/blob/main/Tenda/AC18/saveAutoQos.mdRelatedExploitThird Party Advisory
- www.tenda.com.cnProduct