CVE-2026-6390Disclosure

LOWCVSS 6.8 · MEDIUM

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

A flaw was found in GNU nano's multi-buffer error message handling. When a user opens multiple files at startup and one triggers an ALERT-level error, a specially crafted filename containing printf format specifiers can be reinterpreted. This format string vulnerability may allow an attacker to achieve stack information disclosure, cause a denial of service (crash), or potentially perform arbitrary memory writes.

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0.0/ 10 priority

Sources & remediation

Other references

Weakness type (CWE)

CWE-134

Priority

LOW

Exploitation

NONE

PoC

NONE

Patch

NONE

Momentum

NONE

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

Deep dive

Activity timeline1 mentions / 1d

Signal classification1 categories

Disclosure

1100.0%

Referenced assets1 URL

By indicator

https://vulmon.com/vulnerabilitydetails?qid=CVE-2026-6390

Full discourse1 post

Vulmon Vulnerability Feed@VulmonFeeds91d
Disclosure
CVE-2026-6390 Format String Vulnerability in GNU Nano Multi-Buffer Error Message Handling https://vulmon.com/vulnerabilitydetails?qid=CVE-2026-6390
Post summary
A brief disclosure of a format‑string vulnerability in GNU Nano’s multi‑buffer error handling, with no PoC, exploit, or patch information provided.
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