Tenda A15 UploadCfg stack-based overflow
A vulnerability has been found in Tenda A15 15.13.07.13. The impacted element is the function UploadCfg of the file /cgi-bin/UploadCfg. The manipulation of the argument File leads to stack-based buffer overflow. The attack may be initiated remotely. The exploit has been disclosed to the public and may be used.
- Published
- Mar 22, 2026
- Updated
- Jun 17, 2026
- EPSS
- 1.3% · 69th percentile
- CWE
- CWE-119
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Report tools
Action score
35
Monitor
Low priority for now.
- CVSS
- 35 / 40 · 8.9 / 10
- CISA KEV
- 0 / 30 · Not listed
- EPSS
- 0 / 30 · 1.3%
CISA SSVC decision
- Exploitation
- proof of concept
- Automatable
- yes
- Technical impact
- total
Vulnrichment: CISA's decision-tree inputs.
CNA vs NVD score
- NVD
- —
- CNA · VulDB
- 9.3
- NVD has not scored this yet; the score shown is the CNA’s.
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:P
The score given by the assigning authority versus NVD’s independent score. A gap means the severity is contested.
Noroxi analysis
No Noroxi analysis for this record yet
We don't hand-write analysis for the hundreds of thousands of vulnerabilities in the database; that wouldn't be honest. For notable, high-impact vulnerabilities our team writes the mechanism, detection and remediation steps.
We use this product, ask for helpAffected systems
Affected versions
NVD version ranges (for catalog products). Add the product to your stack with a version and matching uses these.
- tenda a15 firmware15.13.07.13
Versions reported by the vendor
Affected version ranges reported by the assigning authority (VulDB). Independent of NVD's CPE analysis and usually ahead of it.
Tenda A15
- 15.13.07.13affected
Same product
tenda: all recordsOther highest-scoring records for the same primary product.
- CVE-2022-47128Tenda A15 V15.13.07.13 was discovered to contain a stack overflow via the wepkey2 parameter at /goform/WifiBasicSet.39Monitor
- CVE-2022-47127Tenda A15 V15.13.07.13 was discovered to contain a stack overflow via the wrlPwd parameter at /goform/WifiBasicSet.39Monitor
- CVE-2022-47126Tenda A15 V15.13.07.13 was discovered to contain a stack overflow via the wrlEn parameter at /goform/WifiBasicSet.39Monitor
- CVE-2022-47125Tenda A15 V15.13.07.13 was discovered to contain a stack overflow via the wrlEn_5g parameter at /goform/WifiBasicSet.39Monitor
- CVE-2022-47124Tenda A15 V15.13.07.13 was discovered to contain a stack overflow via the wepkey4 parameter at /goform/WifiBasicSet.39Monitor
- CVE-2022-47123Tenda A15 V15.13.07.13 was discovered to contain a stack overflow via the wepkey3 parameter at /goform/WifiBasicSet.39Monitor
Remediation
Which version to upgrade to
Fix versions compiled from the vendor, package registries and Microsoft. Verify the vendor's note before upgrading.
No fix version is recorded for this entry. Check the references for vendor advisories.
Exploit status
Proof of concept available
A public proof of concept or detection signature exists. Exploit knowledge is out there; don't delay patching.
Evidence
- Proof-of-concept repository on GitHub ×1
Noroxi does not host or link to exploit code. Metasploit module names and Nuclei template ids are shown (names, not code); Exploit-DB entries and PoC repositories are given as counts only.
| Source | Kind | Date |
|---|---|---|
| Proof-of-concept repository on GitHub | stars:0 | 2026-08-03 |
Research context
For pentesters and researchers: attack profile, score disagreement, timeline, patch commits, credits, variant and chain candidates, bug bounty scope. All derived from existing data; no exploit code.
Timeline
From publication to today: proof of concept, Metasploit module, CISA KEV and fix record. Dates are as reported by the sources.
- Published
- First PoC+133 d
- TodayOct 8, 2026+200 d
FIRST EPSS daily score; only changes of 0.01 or more are recorded (step chart).
Patch and commit links
Commit, PR and diff links among the references. A starting point for patch-diffing and variant hunting; fixes, not exploits.
No commit or PR link among the references.
Credits
All researchersFinders, reporters and analysts named in the CNA record. Click a name for that researcher’s other records.
- 942384053 (VulDB User)reporter
Variant candidates
Same product, same weakness class, within 18 months. If the patch missed the root cause, the sibling bug is here.
- CVE-2025-4897308 days apartTenda A15 HTTP POST Request multimodalAdd buffer overflow36Monitor
- CVE-2025-12619139 days apartTenda A15 openNetworkGateway fromSetWirelessRepeat buffer overflow29Monitor
Chain candidates
An authentication bypass and a privilege-requiring bug in the same product, published close together: combined they may become an unauthenticated path.
—
Bug bounty scope
No known public program.
Source: bounty-targets-data (public HackerOne, Bugcrowd, Intigriti, YesWeHack listings).
Technical details
Attack conditions
- Anyone who can reach it over the internet can trigger it.
- No account or password is required.
- No user action is required.
- No special conditions are required; it is repeatable.
If successful
- Confidentiality
- Integrity
- Availability
- Attack vector
- Network
- Attack complexity
- Low
- Privileges required
- None
- User interaction
- None
- Scope
- X
Weakness class (CWE)
CWE-119 · Improper Restriction of Operations within the Bounds of a Memory BufferCVSS vector
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: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:X
nvd-secondary
Attack context
MITRE CAPEC attack patterns and ATT&CK techniques for this weakness class (CWE). A starting point for detection rules and threat hunting.
Attack patterns (CAPEC)
- Buffer Overflow via Environment VariablesCAPEC-10likelihood: High · High
- Overflow BuffersCAPEC-100likelihood: High · Very High
- Buffer ManipulationCAPEC-123likelihood: High · Very High
- Client-side Injection-induced Buffer OverflowCAPEC-14likelihood: Medium · High
- Filter Failure through Buffer OverflowCAPEC-24likelihood: High · High
- MIME ConversionCAPEC-42likelihood: High · High
- Overflow Binary Resource FileCAPEC-44likelihood: High · Very High
- Buffer Overflow via Symbolic LinksCAPEC-45likelihood: High · High
ATT&CK techniques
—
Change log
No changes recorded on tracked fields yet. Score, KEV, exploit maturity and fix status changes appear here.
References
- github.com/942384053/cve/issues/3
- vuldb.com/?ctiid.352404
- vuldb.com/?id.352404
- vuldb.com/?submit.775156
- www.tenda.com.cn/
Vendor advisories and official records. Exploit/PoC links are deliberately left out.