VulnSocial

CVE-2026-42799Disclosure(asrmicro / asr1803)

LOWCVSS 9.8 · CRITICAL

Exploitation ongoing with high activity in latest observed window (1 mentions)

Immediate actions

  • Prioritize remediation for asrmicro asr1803 systems immediately
  • Assume compromise if assets are exposed
  • Track advisory updates for patch or workaround availability

Recommended action window: Immediate (within 24h)

NVD description

Out-of-bounds read vulnerability in ASR Kestrel (nr_fw modules) allows Overflow Buffers. This vulnerability is associated with program files Code/Nr/nr_fw/RA/src/NrPwrCtrl.C. This issue affects Kestrel: before 2026/02/10.

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3.5/ 10 priority

Sources & remediation

Vendor / third-party advisories
Weakness type (CWE)
CWE-125

Priority

LOW

Exploitation

ACTIVE

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.

  • asr1803
  • asr1803_firmware

Threat summary

  • Active exploitation appears in 1 classified signals
  • 2 mentions across 2 observed days
  • Momentum state: stable

What's happening

  • Active exploitation reported across 1 signal
  • Technical details provided in 1 signal
  • Disclosure: 1 classified signal
  • Peaked 1d ago at 1 mentions (2026-04-30); latest day: 1
  • 2 total mentions across 2 days

Affected systems

Vendors
asrmicro
Products
asr1803asr1803_firmware

1 version affected across 2 products

Deep dive

Activity timeline2 mentions / 2d
00111Mentions · 2026-04-30: 1Mentions · 2026-05-01: 1Active Exploitation · 2026-05-01: 1Technical Details · 2026-04-30: 104-3005-01
Signal classification2 categories
Disclosure
150.0%
Active Exploitation
150.0%
Referenced assets2 URLs
Classification over time
DateTotalLabels
2026-04-301
Disclosure1
2026-05-011
Active Exploitation1
Full discourse2 posts
  • VulDB 🛡@vuldb
    Active Exploitation

    A lot of offensive activities were identified targeting ASR Kestrel (CVE-2026-42799) https://vuldb.com/vuln/360291/cti

    Post summary

    The post states that attackers are actively exploiting CVE‑2026‑42799 in ASR Kestrel, but no details on the vulnerability, exploitation technique, or mitigation are offered.

    0001155
    2.1K followersView on X
  • Vulmon Vulnerability Feed@VulmonFeeds
    Disclosure

    CVE-2026-42799 Out-of-Bounds Read Vulnerability in ASR Kestrel nr_fw Modules Before 2026/02/10 https://vulmon.com/vulnerabilitydetails?qid=CVE-2026-42799

    Post summary

    The text announces CVE-2026-42799 as an out‑of‑bounds read in ASR Kestrel nr_fw modules, without providing PoC, patch, or active exploitation details.

    0000024
    4.0K followersView on X
CPE platform detail2 entries

2 of 2 entries

PartVendorProductVersionTarget SWTarget HW
HWasrmicroasr1803---
OSasrmicroasr1803_firmware---

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