CVE-2025-8835VulnerabilityPublished 11 Aug 2025Updated 12 Aug 2025

CVE-2025-8835: JasPer · NULL Pointer Dereference

Affects JasPerSource CVE Database V5

Not known to be exploited · CVSS 4.8 Medium.

Data as of 26 Oct 2026, 08:30 UTC

CVSS 4.0 base score

4.8Medium

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

EPSS: 0.2% chance of exploitation in 30 days – higher than 13% of CVEsExploit Prediction Scoring System: the likelihood attackers will use this flaw soon.

CVSS:4.0/AV:L/AC:L/AT:N/PR:L/UI:N/VC:N/VI:N/VA:L/SC:N/SI:N/SA:N/E:P

Base metrics

Attack Vector: Local
Attack Complexity: Low
Attack Requirements: None
Privileges Required: Low
User Interaction: None
Vulnerable system confidentiality: None
Vulnerable system integrity: None
Vulnerable system availability: Low
Subsequent system confidentiality: None
Subsequent system integrity: None
Subsequent system availability: None

Threat metrics

Exploit Maturity: POC

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

Attack Vector: Local: The vulnerable system 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 through terminal emulation (e.g., SSH); or the attacker relies on User Interaction by another person to perform actions required to exploit the vulnerability (e.g., using social engineering techniques to trick a legitimate user into opening a malicious document).
Attack Complexity: Low: The attacker must take no measurable action to exploit the vulnerability. The attack requires no target-specific circumvention to exploit the vulnerability. An attacker can expect repeatable success against the vulnerable system.
Attack Requirements: None: The successful attack does not depend on the deployment and execution conditions of the vulnerable system. The attacker can expect to be able to reach the vulnerability and execute the exploit under all or most instances of the vulnerability.
Privileges Required: Low: The attacker requires privileges that provide basic capabilities that are typically limited to settings and resources owned by a single low-privileged user. Alternatively, an attacker with Low privileges has the ability to access only non-sensitive resources.
User Interaction: None: The vulnerable system can be exploited without interaction from any human user, other than the attacker.
Vulnerable system confidentiality: None: There is no loss of confidentiality within the Vulnerable System.
Vulnerable system integrity: None: There is no loss of integrity within the Vulnerable System.
Vulnerable system 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 Vulnerable System 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 Vulnerable System.
Subsequent system confidentiality: None: There is no loss of confidentiality within the Subsequent System or all confidentiality impact is constrained to the Vulnerable System.
Subsequent system integrity: None: There is no loss of integrity within the Subsequent System or all integrity impact is constrained to the Vulnerable System.
Subsequent system availability: None: There is no impact to availability within the Subsequent System or all availability impact is constrained to the Vulnerable System.
Exploit Maturity: POC: Based on threat intelligence sources each of the following must apply: · Proof-of-concept is publicly available · No knowledge of reported attempts to exploit this vulnerability · No knowledge of publicly available solutions used to simplify attempts to exploit the vulnerability

Definitions: FIRST CVSS v4.0 specification.

Exploitation evidence

Disclosed: evidence found.
CVE published 11 Aug 2025
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 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
JasPer	Affected =4.2.0 =4.2.1 =4.2.2 =4.2.3 =4.2.4 =4.2.5	Fixed in–

AI-suggested

European organizations should prioritize patching affected JasPer library versions (4.2.0 through 4.2.5) by applying the official patch identified by commit bb7d62bd0a2a8e0e1fdb4d603f3305f955158c52. Beyond patching, organizations should implement strict access controls to limit local access to systems running vulnerable software, reducing the risk of exploitation by unauthorized users. Employing application whitelisting and monitoring for abnormal application crashes or behavior related to image processing components can help detect exploitation attempts. Additionally, organizations should audit their software dependencies to identify where JasPer is used, including indirect dependencies in third-party applications, and ensure those applications are updated or mitigated accordingly. Regular vulnerability scanning and integration of JasPer version checks into software composition analysis tools will help maintain visibility. For environments with high security requirements, consider isolating image processing workloads or running them in sandboxed containers to limit the impact of potential crashes. Finally, user training to recognize and report unusual system behavior can aid early detection of exploitation attempts.

Description

A vulnerability was found in JasPer up to 4.2.5. Affected by this vulnerability is the function jas_image_chclrspc of the file src/libjasper/base/jas_image.c of the component Image Color Space Conversion Handler. The manipulation leads to null pointer dereference. It is possible to launch the attack on the local host. The exploit has been disclosed to the public and may be used. The identifier of the patch is bb7d62bd0a2a8e0e1fdb4d603f3305f955158c52. It is recommended to apply a patch to fix this issue.

Impact

For European organizations, the impact of this vulnerability depends largely on the extent to which JasPer is used within their software stacks, particularly in applications that process images and rely on the affected versions of the JasPer library. Organizations using image processing tools, document management systems, or any software that integrates JasPer for color space conversion could experience application crashes or service disruptions if exploited. While the vulnerability does not allow remote exploitation or privilege escalation, local attackers or malicious insiders could leverage this flaw to cause denial of service, potentially disrupting business operations or automated workflows involving image processing. This could be particularly impactful in sectors such as media, publishing, healthcare (medical imaging), and government agencies where image processing is critical. Additionally, the public disclosure of the vulnerability increases the risk of opportunistic attacks, especially in environments where patch management is slow or incomplete. However, the requirement for local access limits the threat primarily to internal networks or compromised hosts rather than external attackers.

References

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Exploitation evidence

What to do

Affected software

Description

AI analysisMachine-generated, updated 19 Aug 2025, 01:47 UTC

Technical details

References

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