HIGH
Heap-based buffer overflow in the SIS unpacker in avast! Anti-Virus Managed Client before 4.7.700 allows user-assisted remote attackers to execute arbitrary code via a crafted SIS archive, resulting from an "integer cast around."
Published May 24, 2007
9.3
HIGHCVSS 2.0
EPSS 7.74%
Description
Heap-based buffer overflow in the SIS unpacker in avast! Anti-Virus Managed Client before 4.7.700 allows user-assisted remote attackers to execute arbitrary code via a crafted SIS archive, resulting from an "integer cast around."
Affected products
No data.
OR
- 4.6.394
- ≤ 4.7.652
No data.
No Red Hat product state for this CVE.
No package ranges for this CVE.
Remediation
No remediation recorded yet.
Metrics
No CVSS v4.0 score for this CVE.
No CVSS v3.1 score for this CVE.
No CVSS v3.0 score for this CVE.
9.3 HIGH NVD
AV:N/AC:M/Au:N/C:C/I:C/A:C
Access Vector Network
Access Complexity Medium
Authentication None
Confidentiality Impact Complete
Integrity Impact Complete
Availability Impact Complete
This CVE is not in the KEV list.
No CISA SSVC assessment for this CVE yet.
7.74% 0.07738
Estimated probability of exploitation in the wild in the next 30 days (FIRST EPSS). As of Oct 1, 2026.
EPSS probability 0.07738
Score over time
2022–2026- EPSS v2
- EPSS v3
- EPSS v4
- EPSS v5
Percentile over time
- EPSS v2
- EPSS v3
- EPSS v4
- EPSS v5
Table of values (13 key points)
Flat stretches are collapsed; showing up to 120 newest points.
| Date | Score | Percentile | Model |
|---|---|---|---|
| Oct 1, 2026 | 7.74% (0.07738) | 94.45th | v5 (v2026.06.15) |
| Jun 15, 2026 | 7.74% (0.07738) | 93.84th | v5 (v2026.06.15) |
| Jun 11, 2025 | 30.43% (0.30428) | 96.44th | v4 (v2025.03.14) |
| Mar 30, 2025 | 24.80% (0.24798) | 95.69th | v4 (v2025.03.14) |
| Mar 29, 2025 | 26.77% (0.26772) | 94.15th | v4 (v2025.03.14) |
| Mar 17, 2025 | 24.80% (0.24798) | 95.68th | v4 (v2025.03.14) |
| Dec 17, 2024 | 31.08% (0.31081) | 96.97th | v3 (v2023.03.01) |
| Feb 18, 2024 | 33.85% (0.33847) | 96.93th | v3 (v2023.03.01) |
| Oct 26, 2023 | 33.86% (0.33858) | 96.58th | v3 (v2023.03.01) |
| Mar 7, 2023 | 33.03% (0.33030) | 96.32th | v3 (v2023.03.01) |
| Mar 6, 2023 | 11.27% (0.11270) | 95.02th | v2 (v2022.01.01) |
| Apr 1, 2022 | 11.27% (0.11270) | 94.61th | v2 (v2022.01.01) |
| Feb 4, 2022 | 11.27% (0.11270) | 88.71th | v2 (v2022.01.01) |
Weaknesses (1)
References (9)
- http://marc.info/?l=full-disclosure&m=118007660813710&w=2 mailing-listx_refsource_FULLDISC
- http://osvdb.org/36522 vdb-entryx_refsource_OSVDB
- http://www.avast.com/eng/adnm-management-client-revision-history.html x_refsource_CONFIRM
- http://www.kb.cert.org/vuls/id/125868 third-party-advisoryx_refsource_CERT-VNUS Government Resource
- http://www.nruns.com/advisories/%5Bn.runs-SA-2007.009%5D%20-%20Avast%21%20Antivirus%20SIS%20parsing%20Arbitrary%20Code%20Execution%20Advisory.txt x_refsource_MISC
- http://www.securityfocus.com/archive/1/469585/100/0/threaded mailing-listx_refsource_BUGTRAQ
- http://www.securityfocus.com/bid/24155 vdb-entryx_refsource_BID
- http://www.vupen.com/english/advisories/2007/1935 vdb-entryx_refsource_VUPENVendor Advisory
- https://exchange.xforce.ibmcloud.com/vulnerabilities/34501 vdb-entryx_refsource_XF
| Link | Providers | Tags |
|---|---|---|
| http://marc.info/?l=full-disclosure&m=118007660813710&w=2 | mailing-listx_refsource_FULLDISC | |
| http://osvdb.org/36522 | vdb-entryx_refsource_OSVDB | |
| http://www.avast.com/eng/adnm-management-client-revision-history.html | x_refsource_CONFIRM | |
| http://www.kb.cert.org/vuls/id/125868 | third-party-advisoryx_refsource_CERT-VNUS Government Resource | |
| http://www.nruns.com/advisories/%5Bn.runs-SA-2007.009%5D%20-%20Avast%21%20Antivirus%20SIS%20parsing%20Arbitrary%20Code%20Execution%20Advisory.txt | x_refsource_MISC | |
| http://www.securityfocus.com/archive/1/469585/100/0/threaded | mailing-listx_refsource_BUGTRAQ | |
| http://www.securityfocus.com/bid/24155 | vdb-entryx_refsource_BID | |
| http://www.vupen.com/english/advisories/2007/1935 | vdb-entryx_refsource_VUPENVendor Advisory | |
| https://exchange.xforce.ibmcloud.com/vulnerabilities/34501 | vdb-entryx_refsource_XF |
Change history (0)
No recorded changes yet.
Sources
CVE.org / MITRE
Status PUBLISHED
Assigner mitre
Published May 24, 2007
Updated Aug 7, 2024
Reserved May 24, 2007
Link CVE-2007-2846
CISA Vulnrichment
Updated n/a