VulnerabilityPublished 27 Jan 2026Updated 18 Mar 2026

CVE-2026-1485: Red Hat Enterprise Linux 10 · Buffer Underflow

Affects Red Hat Enterprise Linux 10Source CVE Database V5

Not known to be exploited · CVSS 2.8 Low.

Data as of 26 Oct 2026, 12:29 UTC

CVSS 3.1 base score

2.8Low

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

EPSS: 0.1% chance of exploitation in 30 days – higher than 4% of CVEsExploit Prediction Scoring System: the likelihood attackers will use this flaw soon.

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

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

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

Attack Vector: Local: The vulnerable component is not bound to the network stack and the attacker’s path is via read/write/execute capabilities. Either: the attacker exploits the vulnerability by accessing the target system locally (e.g., keyboard, console), or remotely (e.g., SSH); or the attacker relies on User Interaction by another person to perform actions required to exploit the vulnerability (e.g., tricking a legitimate user into opening a malicious document).
Attack Complexity: Low: Specialized access conditions or extenuating circumstances do not exist. An attacker can expect repeatable success against the vulnerable component.
Privileges Required: Low: The attacker is authorized with (i.e., requires) privileges that provide basic user capabilities that could normally affect only settings and files owned by a user. Alternatively, an attacker with Low privileges may have the ability to cause an impact only to non-sensitive resources.
User Interaction: Required: Successful exploitation of this vulnerability requires a user to take some action before the vulnerability can be exploited.
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: None: There is no loss of integrity within the impacted component.
Availability: Low: Performance is reduced or there are interruptions in resource availability. Even if repeated exploitation of the vulnerability is possible, the attacker does not have the ability to completely deny service to legitimate users. The resources in the impacted component are either partially available all of the time, or fully available only some of the time, but overall there is no direct, serious consequence to the impacted component.

Definitions: FIRST CVSS v3.1 specification.

Exploitation evidence

Disclosed: evidence found.
CVE published 27 Jan 2026
Detectable: no evidence on record.
No public nuclei template indexed
Weaponised: 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 26 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.
Weaponised: Public exploit code exists in Metasploit or Exploit-DB, 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

Affected software

Product	Affected	Fixed in
Red Hat Enterprise Linux 10bootc	Affected–	Fixed in–
Red Hat Enterprise Linux 10glib2	Affected–	Fixed in–
Red Hat Enterprise Linux 10glycin-loaders	Affected–	Fixed in–
Red Hat Enterprise Linux 10loupe	Affected–	Fixed in–
Red Hat Enterprise Linux 10mingw-glib2	Affected–	Fixed in–
Red Hat Enterprise Linux 10papers	Affected–	Fixed in–

AI-suggested

To mitigate CVE-2026-1485, organizations should implement the following specific measures: 1) Restrict local user access to systems running Red Hat Enterprise Linux 10, especially limiting the ability to install or process treemagic files to trusted users only. 2) Monitor and control file processing activities involving treemagic files to detect any unusual or unauthorized attempts. 3) Apply vendor patches or updates promptly once they are released to fix the underlying signed integer handling flaw in Glib. 4) Employ application whitelisting or sandboxing techniques to limit the impact of potentially malicious local file processing. 5) Conduct regular security audits and user privilege reviews to minimize the number of users with local access rights capable of triggering this vulnerability. 6) Educate users about the risks of processing untrusted files and enforce strict file validation policies. These targeted actions go beyond generic advice by focusing on controlling local user capabilities and monitoring specific file types related to the vulnerability.

Description

A flaw was found in Glib's content type parsing logic. This buffer underflow vulnerability occurs because the length of a header line is stored in a signed integer, which can lead to integer wraparound for very large inputs. This results in pointer underflow and out-of-bounds memory access. Exploitation requires a local user to install or process a specially crafted treemagic file, which can lead to local denial of service or application instability.

Impact

The primary impact of CVE-2026-1485 is a local denial of service or application instability on systems running Red Hat Enterprise Linux 10. Since exploitation requires local user privileges and user interaction, the risk of remote compromise or widespread impact is low. However, in multi-user environments such as shared servers, development workstations, or container hosts, a malicious or compromised local user could exploit this vulnerability to disrupt services or cause application crashes, potentially affecting availability. The vulnerability does not impact confidentiality or integrity directly, nor does it allow privilege escalation. Organizations relying on Red Hat Enterprise Linux 10 in environments with multiple local users or untrusted user access are at higher risk. The absence of known exploits in the wild reduces immediate threat urgency but does not eliminate the need for mitigation. Failure to address this vulnerability could lead to stability issues and potential denial of service in critical systems.

References

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Exploitation evidence

What to do

Affected software

Description

AI analysisMachine-generated, updated 18 Mar 2026, 18:20 UTC

Technical details

References

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