VERITAS Backup Exec 9.0 through 10.0 for Windows Servers, and 9.0.4019 through 9.1.307 for Netware, allows remote attackers to cause a denia
VERITAS Backup Exec 9.0 through 10.0 for Windows Servers, and 9.0.4019 through 9.1.307 for Netware, allows remote attackers to cause a denial of service (Remote Agent crash) via (1) a crafted packet in NDMLSRVR.DLL or (2) a request packet with an invalid (non-0) "Error Status" value, which triggers a null dereference.
- Published
- Jun 28, 2005
- Updated
- Jun 16, 2026
- EPSS
- 35.7% · 98th percentile
- CWE
- CWE-476
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Report tools
Action score
41
Plan
Add it to your regular patch cycle.
- CVSS
- 30 / 40 · 7.5 / 10
- CISA KEV
- 0 / 30 · Not listed
- EPSS
- 11 / 30 · 35.7%
Affected systems
| Vendor | Product | CPE |
|---|---|---|
| veritas | backup exec | cpe:2.3:a:veritas:backup_exec |
Affected versions
NVD version ranges (for catalog products). Add the product to your stack with a version and matching uses these.
- veritas backup exec9.0 and later · up to 10.0 inclusive
- veritas backup exec9.0.4019 and later · up to 9.1.307 inclusive
Same product
veritas: all recordsOther highest-scoring records for the same primary product.
- CVE-2021-27877An issue was discovered in Veritas Backup Exec before 21.2.KEV88Now
- CVE-2021-27878An issue was discovered in Veritas Backup Exec before 21.2.KEV72This week
- CVE-2021-27876An issue was discovered in Veritas Backup Exec before 21.2.KEV66This week
- CVE-2017-8895In Veritas Backup Exec 2014 before build 14.1.1187.1126, 15 before build 14.2.1180.3160, and 16 before FP1, there is a use-after-free vulner60This week
- CVE-2020-36167An issue was discovered in the server in Veritas Backup Exec through 16.2, 20.6 before hotfix 298543, and 21.1 before hotfix 657517.35Monitor
- CVE-2024-33673An issue was discovered in Veritas Backup Exec before 22.2 HotFix 917391.31Monitor
Remediation
Which version to upgrade to
Fix versions compiled from the vendor, package registries and Microsoft. Verify the vendor's note before upgrading.
No fix version is recorded for this entry. Check the references for vendor advisories.
Exploit status
No known public exploit
No public exploit has been observed yet. That doesn't mean you're safe, only that the bar is a little higher.
Research context
For pentesters and researchers: attack profile, score disagreement, timeline, patch commits, credits, variant and chain candidates, bug bounty scope. All derived from existing data; no exploit code.
Timeline
From publication to today: proof of concept, Metasploit module, CISA KEV and fix record. Dates are as reported by the sources.
No dated events beyond publication.
FIRST EPSS daily score; only changes of 0.01 or more are recorded (step chart).
Patch and commit links
Commit, PR and diff links among the references. A starting point for patch-diffing and variant hunting; fixes, not exploits.
No commit or PR link among the references.
Credits
All researchersFinders, reporters and analysts named in the CNA record. Click a name for that researcher’s other records.
No credits in the CNA record.
Variant candidates
Same product, same weakness class, within 18 months. If the patch missed the root cause, the sibling bug is here.
No nightly-computed relations.
Chain candidates
An authentication bypass and a privilege-requiring bug in the same product, published close together: combined they may become an unauthenticated path.
—
Bug bounty scope
No known public program.
Source: bounty-targets-data (public HackerOne, Bugcrowd, Intigriti, YesWeHack listings).
Technical details
Attack conditions
- Anyone who can reach it over the internet can trigger it.
- No account or password is required.
- No user action is required.
- No special conditions are required; it is repeatable.
If successful
- Confidentiality
- none
- Integrity
- none
- Availability
- high · the service can be disrupted
- Attack vector
- Network
- Attack complexity
- Low
- Privileges required
- None
- User interaction
- None
- Scope
- Unchanged
- Confidentiality impact
- None
- Integrity impact
- None
- Availability impact
- High
Weakness class (CWE)
CWE-476 · NULL Pointer DereferenceCVSS vector
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
nvd-primary
Attack context
MITRE CAPEC attack patterns and ATT&CK techniques for this weakness class (CWE). A starting point for detection rules and threat hunting.
MITRE has no CAPEC/ATT&CK mapping for this CWE.
Noroxi analysis
No Noroxi analysis for this record yet
We don't hand-write analysis for all 385,000+ vulnerabilities; that wouldn't be honest. For notable, high-impact vulnerabilities our team writes the mechanism, detection and remediation steps.
We use this product, ask for helpChange log
No changes recorded on tracked fields yet. Score, KEV, exploit maturity and fix status changes appear here.
References
- secunia.com/advisories/15789
- securitytracker.com/id?1014273
- seer.support.veritas.com/docs/276533.htm
- seer.support.veritas.com/docs/277485.htm
- www.idefense.com/application/poi/display?id=270&type=vulnerabilities&flashstatus=true
- www.idefense.com/application/poi/display?id=271&type=vulnerabilities
Vendor advisories and official records. Exploit/PoC links are deliberately left out.