CVE-2026-4293Disclosure

LOWCVSS 5.3 · MEDIUM

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

Immediate actions

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

Recommended action window: Immediate (within 24h)

NVD description

The affected Kieback & Peter DDC building controllers are vulnerable to cross-site scripting, enabling JavaScript to be executed by the victim's browser, which allows the attacker to control the browser.

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3.5/ 10 priority

Sources & remediation

Other references

Weakness type (CWE)

CWE-79

Priority

LOW

Exploitation

ACTIVE

PoC

NONE

Patch

NONE

Momentum

STABLE

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 2 signals
Disclosure: 1 classified signal
Peaked 1d ago at 1 mentions (2026-05-19); latest day: 1
2 total mentions across 2 days

Deep dive

Activity timeline2 mentions / 2d

Signal classification2 categories

Disclosure

150.0%

Active Exploitation

150.0%

Referenced assets2 URLs

By indicator

Classification over time

Date	Total	Labels

2026-05-19	1	Disclosure1
2026-05-20	1	Active Exploitation1

Full discourse2 posts

Aviatrix Threat Research Center@aviatrixtrc141d
Active Exploitation
Attackers exploiting CVE-2026-4293 in Kieback & Peter building controllers use session hijacking to escalate privileges, then move laterally across building automation networks. Runtime segmentation can help contain post-compromise activity in OT environments. #OTSecurity 🔗 Full TRC analysis: https://aviatrix.ai/threat-research-center/kieback-peter-ddc-building-controllers-cve-2026-4293
Post summary
Attackers are actively exploiting CVE-2026-4293 in Kieback & Peter building controllers, using session hijacking to gain privileged access and lateral movement within the OT environment, underscoring a real‑world threat.
0000044
1.9K followersView on X
WearyWendigo@romanaegis142d
Disclosure
🔐 Kieback & Peter DDC Building Controllers CISA has issued an advisory for multiple Kieback & Peter DDC Building Controllers affected by a cross-site scripting (XSS) vulnerability (CVE-2026-4293). The vulnerability affects 11 different control... Read more: https://www.cisa.gov/news-events/ics-advisories/icsa-26-139-05 #CyberSecurity #IT #InfoSec
Post summary
CISA released an advisory for CVE‑2026‑4293, a cross‑site scripting flaw affecting Kieback & Peter DDC Building Controllers; the post summarizes the vulnerability but does not mention a PoC, exploit, or patch.
00000302
757 followersView on X

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