VulnerabilityPublished 4 Nov 2025Updated 20 Nov 2025

CVE-2025-59830: pcs security update

Affects pcsSource GCVE Database

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Mentioned vulnerabilities

Not known to be exploited : upgrade to 0.10.18-2.el8_10.7.alma.1 when convenient.

Data as of 13 Nov 2026, 18:29 UTC

Severity

Unrated

Rated by Threat Radar · No CVSS score from NVD or the CNA

Patch: Available – fixed in 0.10.18-2.el8_10.7.alma.1

Exploitation evidence

Disclosed: evidence found.
CVE published 4 Nov 2025
Detectable: no evidence on record.
No public nuclei template indexed
Weaponized: no evidence on record.
No public exploit code indexed in Metasploit or Exploit-DB
Exploited in the wildExploited: no evidence on record.
Not in CISA KEV and no source reports exploitation
Observed by OffSeq MirageSeen by Mirage: no evidence on record.
No attack traffic recorded by OffSeq Mirage sensors

A missing step is not evidence of safety. Sources: cve.org (opens in a new tab), the Metasploit, Exploit-DB and nuclei-templates index as of 13 Nov 2026.

Disclosed: The CVE record is public on cve.org. Its publication is t = 0.
Detectable: A public nuclei template can find exposed instances, for defenders and attackers alike.
Weaponized: A Metasploit exploit module or Exploit-DB entry exists (Metasploit scanner modules do not count), or CISA SSVC or the CVSS exploit maturity reports a public proof of concept.
Exploited in the wild: CISA KEV lists it, CISA SSVC rates exploitation active, or a source reports attacks.
Observed by OffSeq Mirage: OffSeq Mirage honeypot sensors recorded attack traffic for this CVE, or found exposed hosts without attack traffic.

Moments are spaced evenly, not to scale; a dashed line marks a gap of six months or more. Deltas count from t = 0. Sources that give only a date (CISA KEV, Exploit-DB, or a time of exactly 00:00Z) read “same day” rather than hours. Metasploit modules carry the flaw’s disclosure date, not their release date, and nuclei templates carry no date, so both appear above but not on the timeline.

almalinux-8

What to do

Upgrade the AlmaLinux to 0.10.18-2.el8_10.7.alma.1.

Patches and advisories

access.redhat.com/errata/RHSA-2025:19719 (opens in a new tab)

Affected software

Product	Affected	Fixed in
AlmaLinux 8pcs	Affected <0.10.18-2.el8_10.7.alma.1	Fixed in 0.10.18-2.el8_10.7.alma.1
AlmaLinux 8pcs-snmp	Affected <0.10.18-2.el8_10.7.alma.1	Fixed in 0.10.18-2.el8_10.7.alma.1

Check your own hosts for these packages with threat-finder (opens in a new tab), our free open-source scanner.

Description

The pcs packages provide a command-line configuration system for the Pacemaker and Corosync utilities. Security Fix(es): * rubygem-rack: Rack QueryParser has an unsafe default allowing params_limit bypass via semicolon-separated parameters (CVE-2025-59830) * rack: Rack's unbounded multipart preamble buffering enables DoS (memory exhaustion) (CVE-2025-61770) * rack: Rack's multipart parser buffers large non?file fields entirely in memory, enabling DoS (memory exhaustion) (CVE-2025-61771) * rack: Rack memory exhaustion denial of service (CVE-2025-61772) * rubygem-rack: Unbounded read in `Rack::Request` form parsing can lead to memory exhaustion (CVE-2025-61919) For more details about the security issue(s), including the impact, a CVSS score, acknowledgments, and other related information, refer to the CVE page(s) listed in the References section.

References

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