CVE-2026-96958: microsoft microsoft .net framework 3.5 Inefficient Algorithmic Complexity
CVSS: 7.5v3.1HighAnalyzed
AliasesGHSA-r955-8q5j-3h83CGA-2389-7c5h-v858CGA-29v3-r89j-g8xxCGA-2mm3-cc6r-8hjwCGA-2rg2-2rfm-xmmrCGA-328q-chx9-8vqpCGA-39fx-qx37-hppxCGA-3mg2-qrpg-x9vhCGA-4f33-jr3m-7863CGA-4g89-6f62-gpr7CGA-4j63-cc58-69q7CGA-4pxm-vx4v-6gw3CGA-4vw4-rfc3-q3f3CGA-56x6-qpj3-j267CGA-572j-vpm7-q85gCGA-5j28-338h-8x65CGA-5j9c-83rj-7mqjCGA-5qvf-76hj-4j43CGA-5w24-2c6g-6vx8CGA-6qvw-h4v7-f78qCGA-74rj-8w28-pxrgCGA-75j7-h3mp-fx42CGA-765f-94qp-fr4mCGA-7f87-rx2f-55w8CGA-7h8w-xrpp-mff8CGA-82gh-gcm8-5rxhCGA-84f6-cpmh-64vpCGA-86qr-37c7-fqm8CGA-87g7-jfp2-2hr3CGA-88qg-vvxm-phxjCGA-92fq-2792-fh6jCGA-93h3-v387-hccwCGA-9c4w-rrcg-qxw8CGA-9mwf-456p-qvpxCGA-9qvq-7c8g-5pq4CGA-c3f4-9gpw-248rCGA-c499-hfw2-r36hCGA-c8xw-w2fp-9pggCGA-cqf4-c54r-6xc4CGA-cr33-p3r6-prv4CGA-f473-4j2p-f7f7CGA-fgrv-f4cx-c454CGA-fgx4-4vf8-846qCGA-fj24-mq2j-4f8wCGA-fv79-694p-7q86CGA-g553-gqq6-rp4qCGA-gjgv-cx6f-3wwmCGA-grx4-cpqq-v5wmCGA-grxj-8fr8-2w5jCGA-gx6g-6fcg-35q2CGA-h26h-6x99-rjpfCGA-h9rg-fm72-hj97CGA-hjx6-gvhc-6c76CGA-hq8r-2223-h2mfCGA-j36x-r6f7-6j2vCGA-j77x-4v48-h824CGA-j7vh-xhw4-xwh9CGA-j88q-jxpq-wfxqCGA-j9pv-54xp-m59rCGA-jhxg-h7rq-5rv5CGA-jp5m-8pfx-m8m4CGA-mgqf-r6mm-xfq3CGA-mh89-m37m-r5w8CGA-mm5q-2f29-m34gCGA-mw24-r89w-c6j6CGA-p2wc-66wx-33r3CGA-p58r-827r-h83qCGA-p6w9-3498-fcrfCGA-pgwx-5rqg-mf75CGA-phfx-rqfx-8cg3CGA-pmfc-mhfh-9m6hCGA-pmw7-cm3m-cg43CGA-pr5v-r5xj-g7phCGA-pxv3-fx8w-ghvvCGA-q4hg-hh42-2xvgCGA-q57r-xqwq-hfphCGA-qxf5-r5jg-vgxgCGA-r758-vcrg-cx63CGA-r7hc-6ww5-xc3hCGA-rgfm-6wgr-9hq5CGA-v4rr-7933-8598CGA-v6wg-92qp-7rhcCGA-vwr9-85j2-2jcvCGA-w24x-53rp-2hpfCGA-w93m-fpvq-m4v6CGA-wgcq-5cp7-9gg6CGA-wv95-8wp9-59p2CGA-x2p6-xg7x-h2hxCGA-x6w8-gjqx-3qv7CGA-xh9q-j6m4-mv67CGA-xp2j-h7mw-qf22CGA-xpjg-r7p6-f947CGA-xrp3-6664-27gmCGA-2j37-wq9q-rv78CGA-3f4v-3jfc-c35rCGA-5c3x-q9w7-3wqgCGA-734j-22fg-xqqhCGA-9359-q8m5-x52hCGA-c8gp-gfc3-3f87CGA-cg8p-vwmj-grrmCGA-ffrr-j5q5-6r2cCGA-grqg-8r2g-vr3pCGA-hfg8-hwh9-q5rwCGA-qfqm-hvgh-hcjmCGA-v2r9-6rc9-5vqwCGA-vrw6-cv24-47gcCGA-xxwf-v9x2-53jvCGA-3cw7-v993-v3x4CGA-7gf5-v279-w6qmCGA-fmw9-f4r2-rg2rCGA-j8pw-23ff-2j59CGA-w4g5-wcc6-v5fvCGA-356f-gvf6-32r6CGA-57v4-w3r8-c9fqCGA-6wj9-w3p8-2w78CGA-gf9m-7xc2-gr2cCGA-vg55-wqxq-5qj8BIT-dotnet-2026-96958BIT-dotnet-sdk-2026-96958
Published 13-10-2026Last modified 16-10-2026
Vulnerability summary
CVE-2026-96958 is a high (CVSS 7.5) Inefficient Algorithmic Complexity vulnerability in microsoft microsoft .net framework 3.5. EPSS estimates a 1.03% chance of exploitation in the next 30 days, higher than 63.2% of scored vulnerabilities.
CVSS score
7.5/10
010
High · v3.1 (CVE.org)EPSS score
1.03%
0%100%
Low · Change unavailableKEVNot listedIn no KEV catalog
RansomwareNone recordedNo known use recorded
Public exploits0No public exploits recorded
Timeline
- 13-10-2026PublishedVulnerability first disclosed.
- 16-10-2026Last modifiedVulnerability information updated.
Description
Inefficient algorithmic complexity in .NET allows an unauthorized attacker to deny service over a network.
CVSS metrics
5 scores · 5 sources · 1 versionHigh 7.5Preferred score · CVE.org (CNA)
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H/E:U/RL:O/RC:CSourcesAll 5 agree
- NVDNIST7.5HighCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
- OSV · NugetEcosystem advisory · calculated7.5HighCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
- OSV · WolfiEcosystem advisory · calculated7.5HighCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
- OSV · ChainguardEcosystem advisory · calculated7.5HighCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
EPSS trend
Probability
1.03%
Chance of exploitation in the next 30 days
Percentile
63%
Versus all other CVEs
30-day change
Change unavailable
Change unavailable
14-10-202619-10-2026
EPSS score1.03%
Known exploited
Compare KEV catalogsNot in any of the 3 tracked catalogs.
Public exploits
0 foundNo public exploits indexed.
Weaknesses
CWE · root causeAffected systems
Chainguard11 products
- aspnet-9-targeting-packAll versions (No fix recorded) | < 9.0.122-r0
- dotnet-10-sdkAll versions (No fix recorded) | < 10.0.113-r1
- dotnet-8-sdkAll versions (No fix recorded) | < 8.0.132-r0
- dotnet-9-sdkAll versions (No fix recorded) | < 9.0.122-r0
- dotnet-bootstrap-8All versions (No fix recorded)
Microsoft11 products
- microsoft .net framework 3.5≥ 3.5.0, < 2.0.50727.9188 AND 3.0.30729.9171
- microsoft .net framework 3.5 and 4.6.2/4.7/4.7.1/4.7.2≥ 3.0.0.0, < 2.0.50727.8987 AND 3.0.30729.8982 AND 4.7.4150.0
- microsoft .net framework 3.5 and 4.7.2≥ 4.7.0, < 2.0.50727.9073 AND 3.0.30729.9070 AND 4.7.4150.0
- microsoft .net framework 3.5 and 4.8≥ 4.8.0, < 2.0.50727.9073 AND 3.0.30729.9070 AND 4.8.4811.0
- microsoft .net framework 3.5 and 4.8.1≥ 4.8.1, < 2.0.50727.9188 AND 3.0.30729.9171 AND 4.8.9363.0
Wolfi11 products
- aspnet-9-targeting-packAll versions (No fix recorded) | < 9.0.122-r0
- dotnet-10-sdkAll versions (No fix recorded) | < 10.0.113-r1
- dotnet-8-sdkAll versions (No fix recorded) | < 8.0.132-r0
- dotnet-9-sdkAll versions (No fix recorded) | < 9.0.122-r0
- dotnet-bootstrap-8All versions (No fix recorded)
NuGet1 product
- System.Security.Cryptography.Xml≥ 10.0.0, < 10.0.13 | ≥ 11.0.0-preview.1, < 11.0.0-rc.2 | ≥ 8.0.0, < 8.0.5 | ≥ 9.0.0, < 9.0.21
4 vendors · 34 products
References
5 links
- github.com/dotnet/runtimePACKAGE