VulnSocial

CVE-2026-20434Disclosure(mediatek / lr12a)

LOWCVSS 7.5 · HIGH

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

In Modem, there is a possible out of bounds write due to a missing bounds check. This could lead to remote escalation of privilege, if a UE has connected to a rogue base station controlled by the attacker, with no additional execution privileges needed. User interaction is needed for exploitation. Patch ID: MOLY00782946; Issue ID: MSV-4135.

mediatek CVEsBack to dashboard
0.5/ 10 priority

Sources & remediation

Vendor / third-party advisories
Weakness type (CWE)
CWE-787

Priority

LOW

Exploitation

NONE

PoC

NONE

Patch

NONE

Momentum

STABLE

Are you affected?

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

  • lr12a
  • lr13
  • mt2735
  • mt2737

Threat summary

  • 7 mentions across 5 observed days
  • Momentum state: stable

What's happening

  • Technical details provided in 6 signals
  • Disclosure: 7 classified signals
  • Peaked 4d ago at 3 mentions (2026-03-02); latest day: 1
  • 7 total mentions across 5 days

Affected systems

Vendors
mediatek
Products
lr12alr13mt2735mt2737mt6739mt6761mt6762mt6762dmt6762mmt6763

1 version affected across 99 products

Deep dive

Activity timeline7 mentions / 5d
01223Mentions · 2026-03-02: 3Mentions · 2026-03-04: 1Mentions · 2026-03-05: 1Mentions · 2026-03-06: 1Mentions · 2026-03-07: 1Technical Details · 2026-03-02: 3Technical Details · 2026-03-05: 1Technical Details · 2026-03-06: 1Technical Details · 2026-03-07: 103-0203-0403-0503-0603-07
Signal classification1 categories
Disclosure
7100.0%
Referenced assets5 URLs
Classification over time
DateTotalLabels
2026-03-023
Disclosure3
2026-03-041
Disclosure1
2026-03-051
Disclosure1
2026-03-061
Disclosure1
2026-03-071
Disclosure1
Full discourse7 posts
  • CVE@CVEnew
    Disclosure

    CVE-2026-20434 In Modem, there is a possible out of bounds write due to a missing bounds check. This could lead to remote escalation of privilege, if a UE has connected to a rogue b… https://www.cve.org/CVERecord?id=CVE-2026-20434

    Post summary

    CVE‑2026‑20434 reveals an out‑of‑bounds write in a modem that could enable remote privilege escalation if a UE connects to a rogue base station.

    01011237
    56.6K followersView on X
  • CRAC Learning - Tech@cracbot
    Disclosure

    CVE-2026-20434 (CVSS:7.5, HIGH) is Analyzed. In Modem, there is a possible out of bounds write due to a missing bounds check. This could lead to remote escalation of..https://nvd.nist.gov/vuln/detail/CVE-2026-20434 #cybersecurityawareness #cybersecurity #CVE #infosec #hacker #nvd #mitre

    Post summary

    The tweet provides a brief technical analysis of CVE‑2026‑20434, noting its severity and a missing bounds check that could lead to remote escalation, but does not mention any PoC, exploit, patch, or active exploitation.

    0000024
    173 followersView on X
  • CRAC Learning - Tech@cracbot
    Disclosure

    CVE-2026-20434 (CVSS:7.5, HIGH) is Analyzed. In Modem, there is a possible out of bounds write due to a missing bounds check. This could lead to remote escalation of..https://nvd.nist.gov/vuln/detail/CVE-2026-20434 #cybersecurityawareness #cybersecurity #CVE #infosec #hacker #nvd #mitre

    Post summary

    The tweet announces CVE-2026-20434 with a CVSS of 7.5, describing an out‑of‑bounds write that may allow remote privilege escalation. No patches, PoC, or exploitation activity are mentioned.

    0000021
    173 followersView on X
  • CRAC Learning - Tech@cracbot
    Disclosure

    CVE-2026-20434 (CVSS:7.5, HIGH) is Analyzed. In Modem, there is a possible out of bounds write due to a missing bounds check. This could lead to remote escalation of..https://nvd.nist.gov/vuln/detail/CVE-2026-20434 #cybersecurityawareness #cybersecurity #CVE #infosec #hacker #nvd #mitre

    Post summary

    The post discloses that CVE-2026-20434 is a high‑severity out‑of‑bounds write in modem firmware that could lead to remote escalation, but no PoC, exploit, or active exploitation is referenced.

    0000026
    173 followersView on X
  • CERT-PY@CERTpy
    Disclosure

    ⚠️ Vulnerabilidades en productos MediaTek ❗ CVE-2026-20434 ❗ CVE-2026-20430 ❗ CVE-2026-20423 ➡️ Más info: https://www.cert.gov.py/vulnerabilidades-en-productos-mediatek-6/ https://t.co/e3SFoQSKMx

    Post summary

    The post announces three CVEs affecting MediaTek products and links to a CERT page for more information, but offers no technical details, exploit code, or patch information.

    00000102
    6.6K followersView on X
  • Vulmon Vulnerability Feed@VulmonFeeds
    Disclosure

    CVE-2026-20434 Out-of-Bounds Write in Modem Enables Remote Privilege Escalation https://vulmon.com/vulnerabilitydetails?qid=CVE-2026-20434

    Post summary

    A new out-of-bounds write vulnerability in a modem (CVE-2026-20434) allows remote privilege escalation, as announced in the brief disclosure.

    0000051
    4.0K followersView on X
  • Infoflowcloud@infoflowcloud
    Disclosure

    🚨*CVE* CVE-2026-20434 In Modem, there is a possible out of bounds write due to a missing bounds check. This could lead to remote escalation of privilege, if a UE has connected to a rogue b… https://www.cve.org/CVERecord?id=CVE-2026-20434 ----- Traducción: CVE-2026-20434 En … http://infoflow.cloud`

    Post summary

    The post announces CVE‑2026‑20434, describing an out‑of‑bounds write in a modem that could allow remote privilege escalation, but provides no PoC, exploit, or patch information.

    0000031
    55 followersView on X
CPE platform detail99 entries

99 of 99 entries

PartVendorProductVersionTarget SWTarget HW
OSmediateklr12a---
OSmediateklr13---
HWmediatekmt2735---
HWmediatekmt2737---
HWmediatekmt6739---
HWmediatekmt6761---
HWmediatekmt6762---
HWmediatekmt6762d---
HWmediatekmt6762m---
HWmediatekmt6763---
HWmediatekmt6765---
HWmediatekmt6765t---
HWmediatekmt6767---
HWmediatekmt6768---
HWmediatekmt6769---
HWmediatekmt6769k---
HWmediatekmt6769s---
HWmediatekmt6769t---
HWmediatekmt6769z---
HWmediatekmt6771---
HWmediatekmt6779---
HWmediatekmt6781---
HWmediatekmt6783---
HWmediatekmt6785---
HWmediatekmt6785t---
HWmediatekmt6785u---
HWmediatekmt6789---
HWmediatekmt6833---
HWmediatekmt6833p---
HWmediatekmt6835---
HWmediatekmt6835t---
HWmediatekmt6853---
HWmediatekmt6853t---
HWmediatekmt6855---
HWmediatekmt6855t---
HWmediatekmt6873---
HWmediatekmt6875---
HWmediatekmt6875t---
HWmediatekmt6877---
HWmediatekmt6877t---
HWmediatekmt6877tt---
HWmediatekmt6878---
HWmediatekmt6878m---
HWmediatekmt6879---
HWmediatekmt6880---
HWmediatekmt6883---
HWmediatekmt6885---
HWmediatekmt6886---
HWmediatekmt6889---
HWmediatekmt6890---
HWmediatekmt6891---
HWmediatekmt6893---
HWmediatekmt6895---
HWmediatekmt6895tt---
HWmediatekmt6896---
HWmediatekmt6897---
HWmediatekmt6899---
HWmediatekmt6980---
HWmediatekmt6980d---
HWmediatekmt6983---
HWmediatekmt6983t---
HWmediatekmt6985---
HWmediatekmt6985t---
HWmediatekmt6989---
HWmediatekmt6989t---
HWmediatekmt6990---
HWmediatekmt6991---
HWmediatekmt8666---
HWmediatekmt8667---
HWmediatekmt8668---
HWmediatekmt8673---
HWmediatekmt8675---
HWmediatekmt8676---
HWmediatekmt8678---
HWmediatekmt8755---
HWmediatekmt8765---
HWmediatekmt8766---
HWmediatekmt8766r---
HWmediatekmt8768---
HWmediatekmt8771---
HWmediatekmt8781---
HWmediatekmt8786---
HWmediatekmt8788---
HWmediatekmt8788e---
HWmediatekmt8789---
HWmediatekmt8791---
HWmediatekmt8791t---
HWmediatekmt8792---
HWmediatekmt8793---
HWmediatekmt8795t---
HWmediatekmt8797---
HWmediatekmt8798---
HWmediatekmt8863---
HWmediatekmt8873---
HWmediatekmt8883---
HWmediatekmt8893---
OSmediateknr15---
OSmediateknr16---
OSmediateknr17---

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