CVE-2026-11499: Tenda HG7/HG9/HG10 formDOMAINBLK stack-based overflow
Deferred
Published 08-06-2026Last modified 02-10-2026
Vulnerability summary
CVE-2026-11499 is a high (CVSS 10.0) vulnerability in tenda hg10_firmware. EPSS estimates a 6.64% chance of exploitation in the next 30 days, higher than 93.8% of scored vulnerabilities.
CVSS score
10.0/10
010
High · v2.0 (CVE.org)EPSS score
6.64%
0%100%
Low · +0.07 pp in 30 daysKEVNot listedNot listed by any tracked catalog.
RansomwareNot flaggedNo ransomware use recorded.
Public exploits0No public exploits recorded
Timeline
- 08-06-2026PublishedVulnerability first disclosed.
- 02-10-2026Last modifiedVulnerability information updated.
Description
A vulnerability was determined in Tenda HG7, HG9 and HG10 300001138_en_xpon. This affects the function formDOMAINBLK of the file /boaform/formDOMAINBLK. Executing a manipulation of the argument blkDomain can lead to stack-based buffer overflow. The attack may be performed from remote.
CVSS metrics
7 scores · 2 sources · 4 versionsCritical 9.3Preferred score · CVE.org (CNA)
CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N/E:XSourcesAll 2 agree
- NVDNIST9.3CriticalCVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N/E:X/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:X
Critical 9.8Preferred score · CVE.org (CNA)
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H/E:X/RL:X/RC:RSourcesAll 2 agree
- NVDNIST9.8CriticalCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
Critical 9.8Preferred score · CVE.org (CNA)
CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H/E:X/RL:X/RC:RSourcesSingle source
High 10.0Preferred score · CVE.org (CNA)
AV:N/AC:L/Au:N/C:C/I:C/A:C/E:ND/RL:ND/RC:URSourcesAll 2 agree
- NVDNIST10.0HighAV:N/AC:L/Au:N/C:C/I:C/A:C
EPSS trend
Probability
6.64%
Chance of exploitation in the next 30 days
Percentile
94%
Versus all other CVEs
30-day change
Increase +0.07 pp
From 6.56% on 22-09-2026
22-09-202622-10-2026
Known exploited
Compare KEV catalogs
CISA KEVNot in the CISA KEV catalog.
ENISA CNWNot in the ENISA CNW catalog.
CIRCLNot in the CIRCL catalog.
Public exploits
0 foundNo public exploits indexed.
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
Tenda3 products
- hg10_firmware300001138_en_xpon
- hg7300001138_en_xpon
- hg9_firmware300001138_en_xpon
1 vendor · 3 products
References
7 links- vuldb.com/cve/CVE-2026-11499Third Party Advisory
- vuldb.com/submit/834888Third Party Advisory
- vuldb.com/submit/888875Third Party Advisory
- www.tenda.com.cnProduct