CVE-2026-40198VulnerabilityPublished 29 May 2026

SUSE · Security update for perl-Net-CIDR-Lite

Affects SUSESource GCVE Database

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Authoritative record:CVE-2026-40198· High 7.5

Not known to be exploited · CVSS 7.5 High : upgrade SUSE Net-CIDR-Lite to 0.23 soon.

Data as of 30 Oct 2026, 11:52 UTC

CVSS 3.1 base score

7.5High

How severe the flaw is on the 0–10 CVSS scale.

EPSS: 0.3% chance of exploitation in 30 days – higher than 23% of CVEsExploit Prediction Scoring System: the likelihood attackers will use this flaw soon.
Patch: Available – fixed in 0.23

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:N

Attack Vector: Network
Attack Complexity: Low
Privileges Required: None
User Interaction: None
Scope: Unchanged
Confidentiality: None
Integrity: High
Availability: None

Bold values are the worst case: easiest to exploit or largest impact.

Attack Vector: Network: The vulnerable component is bound to the network stack and the set of possible attackers extends beyond the other options listed, up to and including the entire Internet. Such a vulnerability is often termed 'remotely exploitable' and can be thought of as an attack being exploitable at the protocol level one or more network hops away (e.g., across one or more routers).
Attack Complexity: Low: Specialized access conditions or extenuating circumstances do not exist. An attacker can expect repeatable success against the vulnerable component.
Privileges Required: None: The attacker is unauthorized prior to attack, and therefore does not require any access to settings or files to carry out an attack.
User Interaction: None: The vulnerable system can be exploited without any interaction from any user.
Scope: Unchanged: An exploited vulnerability can only affect resources managed by the same security authority. In this case, the vulnerable component and the impacted component are either the same, or both are managed by the same security authority.
Confidentiality: None: There is no loss of confidentiality within the impacted component.
Integrity: High: There is a total loss of integrity, or a complete loss of protection. For example, the attacker is able to modify any/all files protected by the impacted component. Alternatively, only some files can be modified, but malicious modification would present a direct, serious consequence to the impacted component.
Availability: None: There is no impact to availability within the impacted component.

Definitions: FIRST CVSS v3.1 specification.

Exploitation evidence

Disclosed: evidence found.
CVE published 10 Apr 2026
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 30 Oct 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.

What to do

Upgrade Net::CIDR::Lite and Net-CIDR-Lite to 0.23.

Affected software

Product	Affected	Fixed in
STIGTSPNet::CIDR::Lite	Affected <0.23	Fixed in 0.23
GitHubNet-CIDR-Lite`pkg:github/Net-CIDR-Lite`Other threats	Affected <0.23	Fixed in 0.23

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AI-suggested

A security update addressing these vulnerabilities has been released by the SUSE Product Security Team (advisory SUSE-SU-2026:2113-1). Applying this update to the affected perl-Net-CIDR-Lite package versions is the recommended remediation. Patch status is confirmed by the vendor advisory. No additional mitigation actions are indicated.

Description

Multiple vulnerabilities in perl-Net-CIDR-Lite can lead to IP ACL bypass due to improper validation of IP address formats and CIDR mask values. These include issues with trailing newlines or non-ASCII digits, extraneous leading zeros in CIDR masks, missing validation of IPv6 group counts, and mishandling of IPv4 mapped IPv6 addresses. The vulnerabilities affect SUSE Linux Enterprise Module for Development Tools 15 SP7 and related versions. No known exploits are reported in the wild. A security update addressing these issues has been released by the SUSE Product Security Team.

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Description

AI analysisMachine-generated, updated 31 May 2026, 21:04 UTC

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