CVE-2025-53817: 7-zip NULL Pointer Dereference
Vulnerability summary
CVE-2025-53817 is a high (CVSS 7.5) NULL Pointer Dereference vulnerability in 7-zip. EPSS estimates a 0.71% chance of exploitation in the next 30 days, higher than 52.9% of scored vulnerabilities. 2 public exploits are recorded.
Advisory lineage
Upstream 0 · Downstream 4 · Related 4Timeline
- 17-07-2025PublishedVulnerability first disclosed.
- 04-11-2025Last modifiedVulnerability information updated.
Description
7-Zip is a file archiver with a high compression ratio. 7-Zip supports extracting from Compound Documents. Prior to version 25.0.0, a null pointer dereference in the Compound handler may lead to denial of service. Version 25.0.0 contains a fix cor the issue.
CVSS metrics
6 scores · 4 sources · 2 versions- OSV · UbuntuEcosystem advisory · calculated6.9MediumCVSS:4.0/AV:L/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N/E:PDiffers
- NVDNIST5.5MediumCVSS:4.0/AV:L/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N/E:P/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X
- OSV · UbuntuEcosystem advisory · calculated7.5HighCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
- OSV · DebianEcosystem advisory · calculated7.5HighCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
EPSS trend
Probability
0.71%
Chance of exploitation in the next 30 days
Percentile
53%
Versus all other CVEs
30-day change
+0.07 pp
From 0.64% on 21-09-2026
Known exploited
Compare KEV catalogsNot in any of the 3 tracked catalogs.
Public exploits
2 foundGhsl 2025 059 7 Zip
Maturity: poc
Exploit Reference (openwall.com)
Maturity: unknown
Weaknesses
CWE · root causeAffected systems
Debian2 products
- 7zip< 22.01+really25.01+dfsg-0+deb12u1 | < 25.00+dfsg-1
- p7zip< 16.02+really25.01+dfsg-0+deb12u1 | < 16.02+transitional.1
7-zip1 product
- 7-zip< 25.00
Ipavlov1 product
- 7-zip< 25.0.0
Ubuntu1 product
- 7zipAll versions (No fix recorded)
4 vendors · 5 products
References
6 links- securitylab.github.com/advisories/GHSL-2025-059_7-Zip/X Refsource CONFIRMREPORTExploitThird Party Advisory
