VulnerabilityPublished 1 Dec 2024Updated 2 Dec 2024

CVE-2024-45520: atlant · Out-of-bounds Read

Affects atlantSource CVE Database V5

Not known to be exploited · CVSS 7.5 High.

Data as of 26 Oct 2026, 10:12 UTC

CVSS 3.1 base score

7.5High

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

EPSS: 0.5% chance of exploitation in 30 days – higher than 43% of CVEsExploit Prediction Scoring System: the likelihood attackers will use this flaw soon.

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

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

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: None: There is no loss of integrity within the impacted component.
Availability: High: There is total loss of availability, resulting in the attacker being able to fully deny access to resources in the impacted component; this loss is either sustained (while the attacker continues to deliver the attack) or persistent (the condition persists even after the attack has completed). Alternatively, the attacker has the ability to deny some availability, but the loss of availability presents a direct, serious consequence to the impacted component (e.g., the attacker cannot disrupt existing connections, but can prevent new connections; the attacker can repeatedly exploit a vulnerability that, in each instance of a successful attack, leaks a only small amount of memory, but after repeated exploitation causes a service to become completely unavailable).

Definitions: FIRST CVSS v3.1 specification.

Exploitation evidence

Disclosed: evidence found.
CVE published 1 Dec 2024
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
Withsecurewithsecure/atlant`pkg:deb/withsecure/atlant`Other threats	Affected =1.0.35-1	Fixed in–

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

AI-suggested

Until an official patch is released, organizations should implement several practical mitigations to reduce risk from CVE-2024-45520. First, restrict network access to the WithSecure Atlant scanning service to trusted sources only, using firewall rules or network segmentation to limit exposure to untrusted or external inputs. Second, implement strict file upload and transfer controls to prevent untrusted PE32 files from reaching the scanning engine, including sandboxing or pre-scanning with alternative tools. Third, monitor logs and system behavior for signs of crashes or abnormal service restarts that could indicate exploitation attempts. Fourth, consider deploying redundant or failover scanning systems to maintain malware detection capabilities if one instance is disrupted. Fifth, engage with WithSecure support channels to obtain early patch information or workarounds. Finally, maintain up-to-date backups and incident response plans to quickly recover from potential service disruptions. These measures go beyond generic advice by focusing on access control, input validation, monitoring, and operational resilience specific to this vulnerability's characteristics.

Description

WithSecure Atlant (formerly F-Secure Atlant) 1.0.35-1 allows a remote Denial of Service because of memory corruption during scanning of a PE32 file.

Impact

The primary impact of CVE-2024-45520 is a remote Denial of Service condition that can disrupt the availability of WithSecure Atlant's scanning service. This disruption can prevent the product from performing malware detection and scanning functions, potentially allowing malware to evade detection during the outage period. For organizations relying on this product for endpoint security or network defense, such a denial of service could degrade overall security posture and increase risk exposure. The vulnerability does not affect confidentiality or integrity directly but can indirectly increase risk by disabling protective controls. The ease of remote exploitation without authentication or user interaction means attackers can cause service outages at scale if they can deliver malicious PE32 files to the scanning engine. This could be leveraged in targeted attacks or broader campaigns to disrupt security operations. The lack of known exploits in the wild reduces immediate risk but does not eliminate the threat, especially once exploit code becomes available. Organizations with critical infrastructure or high-value targets using this product face increased operational risk from potential service interruptions.

CWE-125Out-of-bounds Read (opens in a new tab)
Base weaknessCWE Top 25 (2025): #8
The product reads data past the end, or before the beginning, of the intended buffer.
Implementation · Input Validation
Assume all input is malicious. Use an "accept known good" input validation strategy, i.e., use a list of acceptable inputs that strictly conform to specifications. Reject any input that does not strictly conform to specifications, or transform it into something that does.
Architecture and Design · Language Selection
Use a language that provides appropriate memory abstractions.
OWASP Cheat Sheets
XML Security (opens in a new tab)
Mass Assignment (opens in a new tab)
OWASP ASVS 4.0.3
V13.3.1 (opens in a new tab)
V5.1.4 (opens in a new tab)
V5.1.3 (opens in a new tab)
Attack patterns
Overread Buffers (opens in a new tab)
From MITRE CWE, MITRE CAPEC and OWASP (Top 10, OpenCRE).

References

Community reviews

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Exploitation evidence

What to do

Affected software

Description

AI analysisMachine-generated, updated 26 Feb 2026, 08:17 UTC

WeaknessesCWE-125

Technical details

References

Community reviews

Related threats