VulnSocial

CVE-2026-34877Disclosure(arm / mbed_tls)

LOWCVSS 9.8 · CRITICAL

Signal is active with 1 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

An issue was discovered in Mbed TLS versions from 2.19.0 up to 3.6.5, Mbed TLS 4.0.0. Insufficient protection of serialized SSL context or session structures allows an attacker who can modify the serialized structures to induce memory corruption, leading to arbitrary code execution. This is caused by Incorrect Use of Privileged APIs.

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0.5/ 10 priority

Sources & remediation

Vendor / third-party advisories
Weakness type (CWE)
CWE-250CWE-502

Priority

LOW

Exploitation

NONE

PoC

NONE

Patch

NONE

Momentum

NONE

Are you affected?

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

  • mbed_tls

Threat summary

  • 1 mentions across 1 observed day

What's happening

  • Technical details provided in 1 signal
  • Disclosure: 1 classified signal
  • 1 total mentions across 1 day

Affected systems

Vendors
armtrustedfirmware
Products
mbed_tls

1 version affected across 1 product

Deep dive

Activity timeline1 mentions / 1d
00111Mentions · 2026-04-03: 1Technical Details · 2026-04-03: 104-03
Signal classification1 categories
Disclosure
1100.0%
Referenced assets1 URL
By indicator
Full discourse1 post
  • The Hacker Wire@TheHackerWire
    Disclosure

    🔴 CVE-2026-34877 - Critical An issue was discovered in Mbed TLS versions from 2.19.0 up to 3.6.5, Mbed TLS 4.0.0. Insufficient protection of serialized SSL context or session structures allows an attacker who can mo... https://www.thehackerwire.com/vulnerability/CVE-2026-34877/ https://t.co/qEjJdc2wJT

    Post summary

    The post announces a newly discovered critical vulnerability (CVE‑2026‑34877) in Mbed TLS, providing technical details and affected versions, but does not include PoC, exploit code, active exploitation, or mitigation information.

    0000049
    163 followersView on X
CPE platform detail2 entries

2 of 2 entries

PartVendorProductVersionTarget SWTarget HW
Apparmmbed_tls---
Apptrustedfirmwarembed_tls4.0.0--

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