CVE-2026-19812

HIGHPre-NVD 8.88.8—
EchelonGraph scoreHIGH confidence

Score 8.8 from GitHub Security Advisory (severity: HIGH) published 2026-08-14. a secondary CVSS source baseline 8.8; sources differ by 0.0.

Triggered by: GitHub Security Advisory CVSS
Sources: epss, ghsa, secondary
Trending — 5 sources updated this weekElevated
8.8EG
EchelonGraph verdictPlan a fixSerious severity, but no confirmed exploitation yet.
  • High severity, but no confirmed exploitation yet
CISA-KEV: Not listedEPSS PROB: 0%CVSS: 8.8Exploit: Elevated riskExposed: 0

No vendor fix yet — apply a workaround or compensating control (WAF / firewall / segmentation) and watch for a patch.

A weakness has been identified in TOTOLINK A800R 4.1.2cu.5137_B20200730. This affects the function UploadCustomModule of the file /cgi-bin/cstecgi.cgi of the component product.so. This manipulation of the argument File causes stack-based buffer overflow. The attack is possible to be carried out remotely. The exploit has been made available to the public and could be used for attacks.

CVSS v3
8.8
EG Score
8.8(high)
EG Risk
56(Track*)
EG Risk 56/100SSVC: Track*

EG Risk is EchelonGraph's 0–100 priority score: it fuses intrinsic severity with real-world exploitation and automatability so you can rank equal-severity CVEs and fix the most dangerous first. Higher = act sooner. Distinct from the 0–10 EG Score (severity).

How it’s computed
Severity88% × 45%
Exploitation40% × 40%
Automatability0% × 15%
Action: Watch closely — could escalate to Attend.
EPSS PROB
0%
EPSS %ILE
40%
KEV
Not listed

Published

August 14, 2026

Last Modified

August 14, 2026

Advisory Details (2)

Auto-updated Aug 14, 2026
No patch confirmed yet.
generic

TOTOLINK | Wi-Fi 7, Mesh, 5G & Enterprise Networking

https://www.totolink.net/
generic

vuls/totolink/a800r/UploadCustomModule.md at main · panda666-888/vuls · GitHub

https://github.com/panda666-888/vuls/blob/main/totolink/a800r/UploadCustomModule.md

Vendor Advisories for CVE-2026-19812(1)

These vendors published their own advisory mentioning this CVE — often with vendor-specific remediation steps + affected product lists not in NVD.

Weakness Classification(2)

MITRE Common Weakness Enumeration — the root-cause categories this CVE belongs to.

Data Freshness Timeline

(refreshed 33× in last 7d / 37× in last 30d)

Each row is a source pipeline that fetched or updated this CVE on that date, with what changed. For example, "NVD update" means NVD published or revised its analysis for this CVE; "MITRE cvelistV5" means we ingested or refreshed it from the CNA feed. Most recent first.

  1. 2026-08-20 23:49 UTCEG score recompute
  2. 2026-08-20 23:48 UTCGHSA enrichment
  3. 2026-08-20 22:55 UTCEPSS rescore
  4. 2026-08-20 11:27 UTCGHSA enrichment
  5. 2026-08-19 23:06 UTCEG score recompute
  6. 2026-08-19 23:05 UTCGHSA enrichment
  7. 2026-08-19 17:03 UTCEPSS rescore
  8. 2026-08-19 10:41 UTCGHSA enrichment
  9. 2026-08-18 22:14 UTCEG score recompute
  10. 2026-08-18 22:14 UTCGHSA enrichment
  11. 2026-08-18 13:48 UTCEPSS rescore
  12. 2026-08-18 09:43 UTCGHSA enrichment
  13. 2026-08-17 21:21 UTCEG score recompute
  14. 2026-08-17 21:21 UTCGHSA enrichment
  15. 2026-08-17 13:47 UTCEPSS rescore
  16. 2026-08-17 09:00 UTCGHSA enrichment
  17. 2026-08-16 20:40 UTCEG score recompute
  18. 2026-08-16 20:40 UTCGHSA enrichment
  19. 2026-08-16 14:56 UTCEPSS rescore
  20. 2026-08-16 08:19 UTCEG score recompute
  21. 2026-08-16 08:19 UTCGHSA enrichment
  22. 2026-08-16 02:14 UTCEPSS rescore
  23. 2026-08-15 19:58 UTCGHSA enrichment
  24. 2026-08-15 07:37 UTCEG score recompute
  25. 2026-08-15 07:37 UTCGHSA enrichment
Show 12 more
  1. 2026-08-15 01:30 UTCEPSS rescore
  2. 2026-08-14 19:16 UTCGHSA enrichment
  3. 2026-08-14 15:30 UTCEG score recompute
  4. 2026-08-14 15:30 UTCGHSA enrichment
  5. 2026-08-14 15:29 UTCNVD updateCVSS v4 → 7.4
  6. 2026-08-14 14:59 UTCEG score recompute
  7. 2026-08-14 14:59 UTCGHSA enrichment
  8. 2026-08-14 14:58 UTCMITRE cvelistV5CVSS v4 → 8.7
  9. 2026-08-14 08:30 UTCEG score recompute
  10. 2026-08-14 08:30 UTCNVD updateCVSS v4 → 7.4
  11. 2026-08-14 07:49 UTCEG score recompute
  12. 2026-08-14 07:49 UTCMITRE cvelistV5first tracked

Related CVEs(same CWE)

Frequently asked(5)

What is CVE-2026-19812?
CVE-2026-19812 is a high vulnerability published on August 14, 2026. A weakness has been identified in TOTOLINK A800R 4.1.2cu.5137_B20200730. This affects the function UploadCustomModule of the file /cgi-bin/cstecgi.cgi of the component product.so. This manipulation of the argument File causes stack-based buffer overflow. The attack is possible to be carried out…
When was CVE-2026-19812 disclosed?
CVE-2026-19812 was first published in the National Vulnerability Database on August 14, 2026. EchelonGraph re-ingests CVE updates from NVD on a 2-hour cycle, so this page reflects the latest published state.
Is CVE-2026-19812 actively exploited?
CVE-2026-19812 is not currently on CISA's Known Exploited Vulnerabilities catalog. FIRST EPSS estimates a 0% probability of exploitation in the next 30 days, which ranks it in the top 59.6% of all scored CVEs.
What is the CVSS score of CVE-2026-19812?
CVE-2026-19812 has a CVSS v3 base score of 8.8 (NVD).
How do I remediate CVE-2026-19812?
Patch to the fixed version published by the affected vendor. Where vendor advisories exist for CVE-2026-19812, EchelonGraph cross-links them in the Vendor Advisories panel below — those typically contain the canonical remediation steps, fixed version numbers, and any vendor-specific mitigations.

Dependency Blast Radius

Explore the affected products and dependency analysis for CVE-2026-19812

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