CVE-2026-61548Disclosure

LOW

Exploit discussion active in current signal (1 latest mentions)

Immediate actions

Hunt for exploitation attempts and persistence artifacts
Increase monitoring for publicly documented tradecraft
Track advisory updates for patch or workaround availability

Recommended action window: High priority (within 72h)

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1.5/ 10 priority

Priority

LOW

Exploitation

NONE

PoC

YES

Patch

NONE

Momentum

STABLE

Threat summary

Public PoC is present in monitored signal
2 mentions across 2 observed days
Momentum state: stable

What's happening

PoC mentioned or linked in 1 signal
Technical details provided in 2 signals
Disclosure: 1 classified signal
Peaked 1d ago at 1 mentions (2026-07-22); latest day: 1
2 total mentions across 2 days

Deep dive

Activity timeline2 mentions / 2d

Signal classification2 categories

Disclosure

150.0%

PoC

150.0%

Referenced assets2 URLs

By indicator

Classification over time

Date	Total	Labels

2026-07-22	1	Disclosure1
2026-09-21	1	PoC1

Full discourse2 posts

Open Source Security mailing list@oss_security91d
Disclosure
CVE-2026-61548: rsyslog mmpstrucdata: Stack-based buffer overflow https://www.openwall.com/lists/oss-security/2026/07/20/1 in rsyslog's optional mmpstrucdata module. A remote, unauthenticated attacker [...] can crash the rsyslog process. DoS and interruption of log collection. Code execution may be possible.
Post summary
A new stack‑based buffer overflow in rsyslog’s optional mmpstrucdata module (CVE‑2026‑61548) is announced, potentially allowing remote attackers to crash the service and possibly execute code.
11020514
4.7K followersView on X
Hephaestvs@Vulcanux_30d
PoC
csirt_it: ‼️ #PoC #rsyslog: Disponibile Proof of Concept (PoC) per lo sfruttamento CVE-2026-55556 e CVE-2026-61548 Rischio: 🔴 Tipologia: 🔸 Remote Code Execution 🔸 Denial of Service 🔗 https://www.acn.gov.it/portale/w/rsyslog-poc-pubbliche-per-lo-sfruttamento-delle-cve-2026-55556-e-cve-2026-61548 ⚠️ Importante mantenere aggiornati i si… https://t.co/ai00qqXU8X
Post summary
The tweet announces that a public Proof of Concept is available for CVE-2026-55556 and CVE-2026-61548 affecting rsyslog, highlighting that the vulnerabilities allow remote code execution and denial of service.
0000049
637 followersView on X

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