CVE-2026-6986General(cesanta / mongoose)

LOWCVSS 2.9 · LOW

Signal is active with 2 mentions in latest observed window

Immediate actions

  • Track advisory updates for patch or workaround availability

Recommended action window: Monitor and triage in normal cycle

NVD description

A security vulnerability has been detected in Cesanta Mongoose up to 7.20. This issue affects the function mg_aes_gcm_decrypt of the file /src/tls_aes128.c of the component GCM Authentication Tag Handler. Such manipulation leads to improper verification of cryptographic signature. The attack may be performed from remote. A high complexity level is associated with this attack. The exploitability is assessed as difficult. The exploit has been disclosed publicly and may be used. Upgrading to version 7.21 is capable of addressing this issue. It is advisable to upgrade the affected component. VulDB has contacted the vendor early and they confirmed quickly, that this issue got fixed already.

0.0/ 10 priority

Sources & remediation

Weakness type (CWE)
CWE-345CWE-347

Priority

LOW

Exploitation

NONE

PoC

YES

Patch

NONE

Momentum

NONE

Are you affected?

If you run products in this scope, you should treat this CVE as relevant to your environment.

  • mongoose

Threat summary

  • 2 mentions across 1 observed day

What's happening

  • Technical details provided in 2 signals
  • General: 2 classified signals
  • 2 total mentions across 1 day

Affected systems

Vendors
Products
mongoose

Deep dive

Activity timeline2 mentions / 1d
01122Mentions · 2026-04-25: 2Technical Details · 2026-04-25: 204-25
Signal classification1 categories
General
2100.0%
Referenced assets2 URLs
Full discourse2 posts
  • CVE@CVEnew
    General

    CVE-2026-6986 A security vulnerability has been detected in Cesanta Mongoose up to 7.20. This issue affects the function mg_aes_gcm_decrypt of the file /src/tls_aes128.c of the compo… https://www.cve.org/CVERecord?id=CVE-2026-6986

    Post summary

    The note announces CVE‑2026‑6986 in Cesanta Mongoose, providing minimal technical details but lacking PoC, exploit or patch information.

    0001055
    57.2K followersView on X
  • Vulmon Vulnerability Feed@VulmonFeeds
    General

    CVE-2026-6986 Improper Cryptographic Signature Verification in Cesanta Mongoose GCM Authentication Tag Handler https://vulmon.com/vulnerabilitydetails?qid=CVE-2026-6986

    Post summary

    The post merely references CVE‑2026‑6986 with a short technical description and a link, offering no exploit details or mitigation information.

    0000037
    4.0K followersView on X
CPE platform detail1 entries

1 of 1 entries

PartVendorProductVersionTarget SWTarget HW
Appcesantamongoose---

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