CVE-2025-36598VulnerabilityPublished 17 Feb 2026

CVE-2025-36598: Dell Avamar Virtual Edition · Path Traversal

Affects Dell Avamar Virtual EditionSource CVE Database V5

Not known to be exploited · CVSS 6.5 Medium : upgrade to 9.12 with CHF 338905 or later when convenient.

Data as of 25 Oct 2026, 19:02 UTC

CVSS 3.1 base score

6.5Medium

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

EPSS: 0.3% chance of exploitation in 30 days – higher than 31% of CVEsExploit Prediction Scoring System: the likelihood attackers will use this flaw soon.
Patch: Available – fixed in 9.12 with CHF 338905 or later, 2.7.9 with AV CHF 338905

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

Attack Vector: Network
Attack Complexity: Low
Privileges Required: High
User Interaction: None
Scope: Unchanged
Confidentiality: None
Integrity: High
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: High: The attacker is authorized with (i.e., requires) privileges that provide significant (e.g., administrative) control over the vulnerable component that could affect component-wide settings and files.
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: 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 17 Feb 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 2026-10-25.

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 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 Avamar Virtual Edition to 9.12 with CHF 338905 or later; PowerProtect DP Series Appliance (IDPA) to 2.7.9 with AV CHF 338905.

Affected software

Product	Affected	Fixed in
DellAvamar Virtual Edition	Affected ≥ 19.8 through 19.12, < 9.12 with CHF 338905 or later	Fixed in 9.12 with CHF 338905 or later
DellPowerProtect DP Series Appliance (IDPA)	Affected ≥ N/A, < 2.7.9 with AV CHF 338905	Fixed in 2.7.9 with AV CHF 338905

AI-suggested

1. Apply patches promptly once Dell releases the official fix for versions 19.8 through 19.12 to address the path traversal vulnerability. 2. Restrict remote access to Avamar management interfaces using network segmentation, VPNs, or firewall rules to limit exposure to trusted administrators only. 3. Enforce strict access controls and least privilege principles to minimize the number of users with high-level privileges capable of exploiting this vulnerability. 4. Implement robust monitoring and alerting for unusual file upload activities or changes outside expected directories within the Avamar environment. 5. Conduct regular audits of backup system configurations and access logs to detect potential misuse or exploitation attempts. 6. Use application whitelisting or file integrity monitoring to detect unauthorized file modifications or uploads. 7. Educate administrators on the risks of privilege misuse and ensure strong authentication mechanisms, such as multi-factor authentication, are in place for all privileged accounts. 8. Maintain offline or immutable backup copies to ensure recovery options remain intact in case of backup data compromise. 9. Coordinate with Dell support and subscribe to security advisories to stay informed about updates and mitigation guidance.

Description

Dell Avamar, versions prior to 19.12 with patch 338905, contains an Improper Limitation of a Pathname to a Restricted Directory ('Path Traversal') vulnerability in the Security. A high privileged attacker with remote access could potentially exploit this vulnerability, leading to upload malicious files.

Impact

For European organizations, the impact of CVE-2025-36598 could be significant, especially for those relying heavily on Dell Avamar Virtual Edition for backup and disaster recovery. Successful exploitation could allow attackers to upload malicious files that compromise the integrity of backup data, potentially leading to data corruption or loss. This could disrupt business continuity and recovery efforts following incidents such as ransomware attacks or system failures. Additionally, the availability of backup services could be affected if critical files are overwritten or manipulated, causing downtime and operational delays. Since the vulnerability requires high privileges, the risk is elevated in environments where insider threats or compromised administrative accounts exist. The medium severity rating suggests a moderate but non-trivial risk, emphasizing the need for timely remediation. European organizations in sectors with stringent data protection regulations, such as finance, healthcare, and government, may face compliance risks if backup data integrity is compromised. Furthermore, disruption to backup infrastructure could have cascading effects on incident response and regulatory reporting obligations.

CWE-22Improper Limitation of a Pathname to a Restricted Directory ('Path Traversal') (opens in a new tab)
Base weaknessLikelihood of exploit: HighCWE Top 25 (2025): #6OWASP Top 10 A01:2025: Broken Access Control (opens in a new tab)
The product uses external input to construct a pathname that is intended to identify a file or directory that is located underneath a restricted parent directory, but the product does not properly neutralize special elements within the pathname that can cause the pathname to resolve to a location that is outside of the restricted directory.
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
For any security checks that are performed on the client side, ensure that these checks are duplicated on the server side, in order to avoid CWE-602. Attackers can bypass the client-side checks by modifying values after the checks have been performed, or by changing the client to remove the client-side checks…
Implementation · Input Validation
Inputs should be decoded and canonicalized to the application's current internal representation before being validated (CWE-180). Make sure that the application does not decode the same input twice (CWE-174).
OWASP Cheat Sheets
Authorization (opens in a new tab)
OWASP ASVS 4.0.3
V12.3.1 (opens in a new tab)
Attack patterns
Path Traversal (opens in a new tab)
Using Slashes and URL Encoding Combined to Bypass Validation Logic (opens in a new tab)
Manipulating Web Input to File System Calls (opens in a new tab)
Using Escaped Slashes in Alternate Encoding (opens in a new tab)
Using Slashes in Alternate Encoding (opens in a new tab)
From MITRE CWE, MITRE CAPEC and OWASP (Top 10, OpenCRE).

References

dell.com/support/kbdoc/en-us/000347698/dsa-2025-271-security-update-for-dell-avamar-and-dell-avamar-virtual-edition-multiple-vulnerabilities (opens in a new tab)

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Exploitation evidence

What to do

Affected software

Description

AI analysisMachine-generated, updated 18 Feb 2026, 08:34 UTC

WeaknessesCWE-22

Technical details

References

Community reviews

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