[UPDATE] [medium] Perl: Vulnerability allows code execution and information disclosure

mediumCVE-2025-40909

A local attacker can exploit a vulnerability in Perl to execute arbitrary program code and disclose information.

CSIRTS triage

vendor: Perl product: Perl Remote code execution Information disclosure

What: A local attacker can exploit a vulnerability in Perl to execute arbitrary program code and disclose information.
Who is affected: Local attackers using affected versions of Perl.
Urgency: Remediation is medium urgency due to the potential for code execution and information disclosure.
Action: Update to the latest version of Perl to mitigate the vulnerability.

AI-assisted analysis generated from the source advisory — verify against the original.

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Details

Source: CERT-Bund (BSI) Security Advisories (DE · national-cert · site)
Severity: medium
Published: 2026-07-09
Exploitation: Not in CISA KEV at last sync
Language: Machine-translated to English — verify against the original

Original advisory: https://wid.cert-bund.de/portal/wid/securityadvisory?name=WID-SEC-2025-1206

Exploitation outlook

EPSS (FIRST.org) estimates each CVE’s probability of exploitation in the next 30 days — here is the CSIRTS.com read on those numbers.

Low exploitation riskCVE-2025-409090.37% 30-day exploitation probability — currently an unlikely target, but scores change as exploit code circulates. Riskier than 29% of all scored CVEs.

Referenced CVEs

CVE	CSIRTS overview	External
CVE-2025-40909	coverage & exploitation status	NVD · CVE.org

Same CVEs, other sources

How other CERTs, PSIRTs and databases cover the vulnerabilities in this advisory.

medium[UPDATE] [medium] Red Hat Enterprise Linux (nodejs, perl): Multiple vulnerabilitiescert-bund

Recent advisories for Perl

A cluster of recent advisories against the same product widens the attack surface — attackers routinely chain freshly published CVEs on one product, so review these together.

medium[UPDATE] [medium] Red Hat Enterprise Linux (perl-IO-Compress): Vulnerability allows executing arbitrary progra…cert-bund · 2026-07-10
medium[UPDATE] [medium] Red Hat Enterprise Linux (nodejs, perl): Multiple vulnerabilitiescert-bund · 2026-07-09
high[NEW] [high] Red Hat Enterprise Linux (perl-HTTP-Daemon): Vulnerability allows execution of arbitrary program …cert-bund · 2026-07-09
highCVE-2026-49147: App::Ack versions through 3.10.0 for Perl print unsanitised terminal escape sequences from fil…nvd · 2026-07-08
highCVE-2026-49146: App::Ack versions before 3.10.0 for Perl allow memory exhaustion via an unbounded context valu…nvd · 2026-07-08
highCVE-2026-49145: App::Ack versions through 3.10.0 for Perl read arbitrary files via --files-from in a project .…nvd · 2026-07-08