CVE-2026-26736: totolink a3002ru_firmware Out-of-bounds Write
CVSS: 8.8v3.1HighModified
Published 17-02-2026Last modified 09-03-2026
Vulnerability summary
CVE-2026-26736 is a high (CVSS 8.8) Out-of-bounds Write vulnerability in totolink a3002ru_firmware. EPSS estimates a 1.42% chance of exploitation in the next 30 days, higher than 72.5% of scored vulnerabilities. 1 public exploit is recorded.
CVSS score
8.8/10
010
High · v3.1 (CVE.org)EPSS score
1.42%
0%100%
Low · +0.90 pp in 30 daysKEVNot listedIn no KEV catalog
RansomwareNone recordedNo known use recorded
Public exploits1github
Timeline
- 17-02-2026PublishedVulnerability first disclosed.
- 09-03-2026Last modifiedVulnerability information updated.
Description
TOTOLINK A3002RU_V3 V3.0.0-B20220304.1804 was discovered to contain a stack-based buffer overflow via the static_ipv6 parameter in the formIpv6Setup function.
CVSS metrics
2 scores · 2 sources · 1 versionHigh 8.8Preferred score · CVE.org (CNA)
CVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:HSourcesAll 2 agree
- NVDNIST8.8HighCVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
EPSS trend
Probability
1.42%
Chance of exploitation in the next 30 days
Percentile
73%
Versus all other CVEs
30-day change
+0.90 pp
From 0.51% on 21-09-2026
21-09-202621-10-2026
EPSS score1.42%
Known exploited
Compare KEV catalogsNot in any of the 3 tracked catalogs.
Public exploits
1 foundCve
Maturity: poc
Weaknesses
CWE · root cause- CWE-787Out-of-bounds WriteThe product writes data past the end, or before the beginning, of the intended buffer.
- 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
Totolink1 product
- a3002ru_firmware≤ 3.0.0-b20220304.1804
1 vendor · 1 product
References
1 links- github.com/0xmania/cve/tree/main/TOTOLINK-A3002RUV3.0-boa-formIpv6Setup-StackOverflowExploitThird Party Advisory